Give the sum of the first 'n' terms of a geometric series, given 'a' as the first term and 'r' as the ratio.
Find the alphabetic word product
Test if a Number is a Palindrome without using any String Operations
Given a 4x4 matrix, swap the two middle columns
Square a Number
Matrix of almost all zeros, except for main diagonal
Check if is a square
Double the next!
Approximate the inverse tangent by power series
Get the value 100
Ratio between sum of primes and sum of factors
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