├── 1- Introduction to Math ├── 1-Arithmetic_Progression │ ├── 1-arithmetic_progression_special_pdf │ │ ├── arithmetic_progression.pdf │ │ └── arithmetic_progression.png │ ├── 2-arithmetic_progression_codes │ │ └── arthemtic_progression.cpp │ └── 3-arithmetic_progression_all_slides │ │ └── Arithmetic Progression.pdf ├── 2-Geometric_Progression │ ├── 1-geometric_progression_pdf_png │ │ ├── geometric_progression.pdf │ │ └── geometric_progression.png │ ├── 2-geometric_progression_codes │ │ └── geometric_progression.cpp │ └── 3-geometric_progression_all_slides │ │ └── Geometric Progression.pdf ├── 3-Power and Logarithm │ └── power and Logarithm all slides │ │ └── Power and Logarithm.pdf ├── 4-Cumulative_Sum │ ├── 1-cumulative_sum_pdf_png │ │ ├── cumulative_sum.pdf │ │ └── cumulative_sum.png │ ├── 2-cumulative_sum_codes │ │ └── cumulative_sum.cpp │ └── 3-cumulative_sum_all_slides │ │ └── cumulative sum.pdf └── 5-Ranged_Sum │ ├── 1-Ranged_Sum_pdf_png │ ├── ranged_sum.pdf │ └── ranged_sum.png │ ├── 2-Ranged_Sum_codes │ └── ranged_sum.cpp │ └── 3-Ranged_Sum_all_slides │ └── ranged sum.pdf ├── 1- introduction to probability.pdf ├── 2- Math and Number Theory ├── 1 - Modular_Arithmetic │ ├── 1-Modular_Arithmetic_png_pdf │ │ ├── Modular_arithmetic.pdf │ │ └── Modular_arithmetic.png │ ├── 2-Modular_Arithmetic_codes │ │ └── Modular_Arithmetic.cpp │ └── 3-Modular_Arithmetic_all_slides │ │ └── Modular arithmetic.pdf ├── 2- Modular Exponentiation (Fast power) │ ├── 1-Modular Exponentiation (Fast power) pdf_png │ │ ├── Modular Exponentiation (Fast power).pdf │ │ └── Modular Exponentiation (Fast power).png │ └── 2-Modular Exponentiation (Fast power) coding │ │ └── Modular Exponentiation (Fast power).cpp ├── 3- Factorization │ ├── 1-Factorization png_pdf │ │ ├── Factorization.pdf │ │ └── Factorization.png │ ├── 2-Factorization coding │ │ └── Factorization.cpp │ └── 3-Factorization all slides │ │ └── Factorization all slides.pdf ├── 4- Prime Factorization │ ├── 1- Prime_Factorizaiton_codes │ │ └── prime_factorization.cpp │ └── 2- Prime_Factorization_all_slides │ │ └── Prime Factorizatoin.pdf ├── 5- Greatest Common divisor │ ├── 1-Greatset_common_divisor_all_slides │ │ └── Greatset_common_divisor_all_slides.pdf │ └── 2-Greatest_common_divisor_code │ │ └── 2-Greatest_common_divisor.cpp ├── 6- Least Common Multiple │ ├── 1-Least_common_Multiple_codes │ │ └── Least_common_multiple_code.cpp │ └── 2-Least_common_Multiple_all_slides │ │ └── 2-Least_common_Multiple_all_slides.pdf ├── 7-Extended Euclidian Algorithm │ ├── 1-Extended Euclidian Algorithm slides │ │ ├── extended eculidean algorithm iterative.pdf │ │ └── extended eculidean algorithm recursive.pdf │ └── 2-Extended Euclidian Algorithm codes │ │ └── extended euclidian algorithm.cpp ├── 8-Modular Multiplicative Inverse │ └── 1-Modular Multiplicative inverse all slides │ │ └── Modular multiplicative inverse.pdf └── 9-Sieve of Eratosthenes │ ├── 1-Sieve of Eratosthenes slides │ ├── Linear Sieve.pdf │ └── Sieve of Eratosthenes.pdf │ └── 2-Sieve of Eratosthenes codes │ └── Sieve_and_linear_Sieve.cpp ├── 3- Recursion and Backtracking ├── Recursion-1.pdf ├── Recursion-2.pdf ├── Recursion-3.pdf ├── Recursion-5.pdf └── recursion-4.pdf └── all playlists revisions └── 1-introduction to math playlist ├── 1-Introduction to math playlist.pdf └── 2-Introduction to math playlist jpg ├── 1.jpg ├── 2.jpg ├── 3.jpg ├── 4.jpg └── 5.jpg /1- Introduction to Math/1-Arithmetic_Progression/1-arithmetic_progression_special_pdf/arithmetic_progression.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/1- Introduction to Math/1-Arithmetic_Progression/1-arithmetic_progression_special_pdf/arithmetic_progression.pdf -------------------------------------------------------------------------------- /1- Introduction to Math/1-Arithmetic_Progression/1-arithmetic_progression_special_pdf/arithmetic_progression.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/1- Introduction to Math/1-Arithmetic_Progression/1-arithmetic_progression_special_pdf/arithmetic_progression.png -------------------------------------------------------------------------------- /1- Introduction to Math/1-Arithmetic_Progression/2-arithmetic_progression_codes/arthemtic_progression.cpp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/1- Introduction to Math/1-Arithmetic_Progression/2-arithmetic_progression_codes/arthemtic_progression.cpp -------------------------------------------------------------------------------- /1- Introduction to Math/1-Arithmetic_Progression/3-arithmetic_progression_all_slides/Arithmetic Progression.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/1- Introduction to Math/1-Arithmetic_Progression/3-arithmetic_progression_all_slides/Arithmetic Progression.pdf -------------------------------------------------------------------------------- /1- Introduction to Math/2-Geometric_Progression/1-geometric_progression_pdf_png/geometric_progression.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/1- Introduction to Math/2-Geometric_Progression/1-geometric_progression_pdf_png/geometric_progression.pdf -------------------------------------------------------------------------------- /1- Introduction to Math/2-Geometric_Progression/1-geometric_progression_pdf_png/geometric_progression.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/1- Introduction to Math/2-Geometric_Progression/1-geometric_progression_pdf_png/geometric_progression.png -------------------------------------------------------------------------------- /1- Introduction to Math/2-Geometric_Progression/2-geometric_progression_codes/geometric_progression.cpp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/1- Introduction to Math/2-Geometric_Progression/2-geometric_progression_codes/geometric_progression.cpp -------------------------------------------------------------------------------- /1- Introduction to Math/2-Geometric_Progression/3-geometric_progression_all_slides/Geometric Progression.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/1- Introduction to Math/2-Geometric_Progression/3-geometric_progression_all_slides/Geometric Progression.pdf -------------------------------------------------------------------------------- /1- Introduction to Math/3-Power and Logarithm/power and Logarithm all slides/Power and Logarithm.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/1- Introduction to Math/3-Power and Logarithm/power and Logarithm all slides/Power and Logarithm.pdf -------------------------------------------------------------------------------- /1- Introduction to Math/4-Cumulative_Sum/1-cumulative_sum_pdf_png/cumulative_sum.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/1- Introduction to Math/4-Cumulative_Sum/1-cumulative_sum_pdf_png/cumulative_sum.pdf -------------------------------------------------------------------------------- /1- Introduction to Math/4-Cumulative_Sum/1-cumulative_sum_pdf_png/cumulative_sum.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/1- Introduction to Math/4-Cumulative_Sum/1-cumulative_sum_pdf_png/cumulative_sum.png -------------------------------------------------------------------------------- /1- Introduction to Math/4-Cumulative_Sum/2-cumulative_sum_codes/cumulative_sum.cpp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/1- Introduction to Math/4-Cumulative_Sum/2-cumulative_sum_codes/cumulative_sum.cpp -------------------------------------------------------------------------------- /1- Introduction to Math/4-Cumulative_Sum/3-cumulative_sum_all_slides/cumulative sum.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/1- Introduction to Math/4-Cumulative_Sum/3-cumulative_sum_all_slides/cumulative sum.pdf -------------------------------------------------------------------------------- /1- Introduction to Math/5-Ranged_Sum/1-Ranged_Sum_pdf_png/ranged_sum.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/1- Introduction to Math/5-Ranged_Sum/1-Ranged_Sum_pdf_png/ranged_sum.pdf -------------------------------------------------------------------------------- /1- Introduction to Math/5-Ranged_Sum/1-Ranged_Sum_pdf_png/ranged_sum.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/1- Introduction to Math/5-Ranged_Sum/1-Ranged_Sum_pdf_png/ranged_sum.png -------------------------------------------------------------------------------- /1- Introduction to Math/5-Ranged_Sum/2-Ranged_Sum_codes/ranged_sum.cpp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/1- Introduction to Math/5-Ranged_Sum/2-Ranged_Sum_codes/ranged_sum.cpp -------------------------------------------------------------------------------- /1- Introduction to Math/5-Ranged_Sum/3-Ranged_Sum_all_slides/ranged sum.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/1- Introduction to Math/5-Ranged_Sum/3-Ranged_Sum_all_slides/ranged sum.pdf -------------------------------------------------------------------------------- /1- introduction to probability.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/1- introduction to probability.pdf -------------------------------------------------------------------------------- /2- Math and Number Theory/1 - Modular_Arithmetic/1-Modular_Arithmetic_png_pdf/Modular_arithmetic.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/2- Math and Number Theory/1 - Modular_Arithmetic/1-Modular_Arithmetic_png_pdf/Modular_arithmetic.pdf -------------------------------------------------------------------------------- /2- Math and Number Theory/1 - Modular_Arithmetic/1-Modular_Arithmetic_png_pdf/Modular_arithmetic.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/2- Math and Number Theory/1 - Modular_Arithmetic/1-Modular_Arithmetic_png_pdf/Modular_arithmetic.png -------------------------------------------------------------------------------- /2- Math and Number Theory/1 - Modular_Arithmetic/2-Modular_Arithmetic_codes/Modular_Arithmetic.cpp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/2- Math and Number Theory/1 - Modular_Arithmetic/2-Modular_Arithmetic_codes/Modular_Arithmetic.cpp -------------------------------------------------------------------------------- /2- Math and Number Theory/1 - Modular_Arithmetic/3-Modular_Arithmetic_all_slides/Modular arithmetic.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/2- Math and Number Theory/1 - Modular_Arithmetic/3-Modular_Arithmetic_all_slides/Modular arithmetic.pdf -------------------------------------------------------------------------------- /2- Math and Number Theory/2- Modular Exponentiation (Fast power)/1-Modular Exponentiation (Fast power) pdf_png/Modular Exponentiation (Fast power).pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/2- Math and Number Theory/2- Modular Exponentiation (Fast power)/1-Modular Exponentiation (Fast power) pdf_png/Modular Exponentiation (Fast power).pdf -------------------------------------------------------------------------------- /2- Math and Number Theory/2- Modular Exponentiation (Fast power)/1-Modular Exponentiation (Fast power) pdf_png/Modular Exponentiation (Fast power).png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/2- Math and Number Theory/2- Modular Exponentiation (Fast power)/1-Modular Exponentiation (Fast power) pdf_png/Modular Exponentiation (Fast power).png -------------------------------------------------------------------------------- /2- Math and Number Theory/2- Modular Exponentiation (Fast power)/2-Modular Exponentiation (Fast power) coding/Modular Exponentiation (Fast power).cpp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/2- Math and Number Theory/2- Modular Exponentiation (Fast power)/2-Modular Exponentiation (Fast power) coding/Modular Exponentiation (Fast power).cpp -------------------------------------------------------------------------------- /2- Math and Number Theory/3- Factorization/1-Factorization png_pdf/Factorization.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/2- Math and Number Theory/3- Factorization/1-Factorization png_pdf/Factorization.pdf -------------------------------------------------------------------------------- /2- Math and Number Theory/3- Factorization/1-Factorization png_pdf/Factorization.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/2- Math and Number Theory/3- Factorization/1-Factorization png_pdf/Factorization.png -------------------------------------------------------------------------------- /2- Math and Number Theory/3- Factorization/2-Factorization coding/Factorization.cpp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/2- Math and Number Theory/3- Factorization/2-Factorization coding/Factorization.cpp -------------------------------------------------------------------------------- /2- Math and Number Theory/3- Factorization/3-Factorization all slides/Factorization all slides.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/2- Math and Number Theory/3- Factorization/3-Factorization all slides/Factorization all slides.pdf -------------------------------------------------------------------------------- /2- Math and Number Theory/4- Prime Factorization/1- Prime_Factorizaiton_codes/prime_factorization.cpp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/2- Math and Number Theory/4- Prime Factorization/1- Prime_Factorizaiton_codes/prime_factorization.cpp -------------------------------------------------------------------------------- /2- Math and Number Theory/4- Prime Factorization/2- Prime_Factorization_all_slides/Prime Factorizatoin.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/2- Math and Number Theory/4- Prime Factorization/2- Prime_Factorization_all_slides/Prime Factorizatoin.pdf -------------------------------------------------------------------------------- /2- Math and Number Theory/5- Greatest Common divisor/1-Greatset_common_divisor_all_slides/Greatset_common_divisor_all_slides.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/2- Math and Number Theory/5- Greatest Common divisor/1-Greatset_common_divisor_all_slides/Greatset_common_divisor_all_slides.pdf -------------------------------------------------------------------------------- /2- Math and Number Theory/5- Greatest Common divisor/2-Greatest_common_divisor_code/2-Greatest_common_divisor.cpp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/2- Math and Number Theory/5- Greatest Common divisor/2-Greatest_common_divisor_code/2-Greatest_common_divisor.cpp -------------------------------------------------------------------------------- /2- Math and Number Theory/6- Least Common Multiple/1-Least_common_Multiple_codes/Least_common_multiple_code.cpp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/2- Math and Number Theory/6- Least Common Multiple/1-Least_common_Multiple_codes/Least_common_multiple_code.cpp -------------------------------------------------------------------------------- /2- Math and Number Theory/6- Least Common Multiple/2-Least_common_Multiple_all_slides/2-Least_common_Multiple_all_slides.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/2- Math and Number Theory/6- Least Common Multiple/2-Least_common_Multiple_all_slides/2-Least_common_Multiple_all_slides.pdf -------------------------------------------------------------------------------- /2- Math and Number Theory/7-Extended Euclidian Algorithm/1-Extended Euclidian Algorithm slides/extended eculidean algorithm iterative.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/2- Math and Number Theory/7-Extended Euclidian Algorithm/1-Extended Euclidian Algorithm slides/extended eculidean algorithm iterative.pdf -------------------------------------------------------------------------------- /2- Math and Number Theory/7-Extended Euclidian Algorithm/1-Extended Euclidian Algorithm slides/extended eculidean algorithm recursive.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/2- Math and Number Theory/7-Extended Euclidian Algorithm/1-Extended Euclidian Algorithm slides/extended eculidean algorithm recursive.pdf -------------------------------------------------------------------------------- /2- Math and Number Theory/7-Extended Euclidian Algorithm/2-Extended Euclidian Algorithm codes/extended euclidian algorithm.cpp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/2- Math and Number Theory/7-Extended Euclidian Algorithm/2-Extended Euclidian Algorithm codes/extended euclidian algorithm.cpp -------------------------------------------------------------------------------- /2- Math and Number Theory/8-Modular Multiplicative Inverse/1-Modular Multiplicative inverse all slides/Modular multiplicative inverse.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/2- Math and Number Theory/8-Modular Multiplicative Inverse/1-Modular Multiplicative inverse all slides/Modular multiplicative inverse.pdf -------------------------------------------------------------------------------- /2- Math and Number Theory/9-Sieve of Eratosthenes/1-Sieve of Eratosthenes slides/Linear Sieve.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/2- Math and Number Theory/9-Sieve of Eratosthenes/1-Sieve of Eratosthenes slides/Linear Sieve.pdf -------------------------------------------------------------------------------- /2- Math and Number Theory/9-Sieve of Eratosthenes/1-Sieve of Eratosthenes slides/Sieve of Eratosthenes.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/2- Math and Number Theory/9-Sieve of Eratosthenes/1-Sieve of Eratosthenes slides/Sieve of Eratosthenes.pdf -------------------------------------------------------------------------------- /2- Math and Number Theory/9-Sieve of Eratosthenes/2-Sieve of Eratosthenes codes/Sieve_and_linear_Sieve.cpp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/2- Math and Number Theory/9-Sieve of Eratosthenes/2-Sieve of Eratosthenes codes/Sieve_and_linear_Sieve.cpp -------------------------------------------------------------------------------- /3- Recursion and Backtracking/Recursion-1.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/3- Recursion and Backtracking/Recursion-1.pdf -------------------------------------------------------------------------------- /3- Recursion and Backtracking/Recursion-2.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/3- Recursion and Backtracking/Recursion-2.pdf -------------------------------------------------------------------------------- /3- Recursion and Backtracking/Recursion-3.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/3- Recursion and Backtracking/Recursion-3.pdf -------------------------------------------------------------------------------- /3- Recursion and Backtracking/Recursion-5.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/3- Recursion and Backtracking/Recursion-5.pdf -------------------------------------------------------------------------------- /3- Recursion and Backtracking/recursion-4.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/3- Recursion and Backtracking/recursion-4.pdf -------------------------------------------------------------------------------- /all playlists revisions/1-introduction to math playlist/1-Introduction to math playlist.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/all playlists revisions/1-introduction to math playlist/1-Introduction to math playlist.pdf -------------------------------------------------------------------------------- /all playlists revisions/1-introduction to math playlist/2-Introduction to math playlist jpg/1.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/all playlists revisions/1-introduction to math playlist/2-Introduction to math playlist jpg/1.jpg -------------------------------------------------------------------------------- /all playlists revisions/1-introduction to math playlist/2-Introduction to math playlist jpg/2.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/all playlists revisions/1-introduction to math playlist/2-Introduction to math playlist jpg/2.jpg -------------------------------------------------------------------------------- /all playlists revisions/1-introduction to math playlist/2-Introduction to math playlist jpg/3.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/all playlists revisions/1-introduction to math playlist/2-Introduction to math playlist jpg/3.jpg -------------------------------------------------------------------------------- /all playlists revisions/1-introduction to math playlist/2-Introduction to math playlist jpg/4.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/all playlists revisions/1-introduction to math playlist/2-Introduction to math playlist jpg/4.jpg -------------------------------------------------------------------------------- /all playlists revisions/1-introduction to math playlist/2-Introduction to math playlist jpg/5.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/marioeid/Mr-Algorithms/HEAD/all playlists revisions/1-introduction to math playlist/2-Introduction to math playlist jpg/5.jpg --------------------------------------------------------------------------------