Algorithms Q&A - Recent questions in Math Basics https://notexponential.com/questions/math-basics Powered by Question2Answer What is the last digit of number: 2^100 https://notexponential.com/828/what-is-the-last-digit-of-number-2-100 In other words, what is 2^100 mod 10 Math Basics https://notexponential.com/828/what-is-the-last-digit-of-number-2-100 Tue, 01 Aug 2023 01:36:25 +0000 Probability of rolling at least a 7 with two dice https://notexponential.com/823/probability-of-rolling-at-least-a-7-with-two-dice What is the probability of rolling at least a 7 when given two dice? Math Basics https://notexponential.com/823/probability-of-rolling-at-least-a-7-with-two-dice Thu, 11 May 2023 18:49:29 +0000 Prove that there are infinite primes https://notexponential.com/766/prove-that-there-are-infinite-primes Prove that there are infinite primes by using proof by contradiction. Math Basics https://notexponential.com/766/prove-that-there-are-infinite-primes Sun, 23 May 2021 02:26:51 +0000 Give a Proof by Induction that the sum of squares of first n natural numbers is n. (n+1). (2n + 1) / 6. https://notexponential.com/764/give-proof-induction-that-the-squares-first-natural-numbers Math Basics https://notexponential.com/764/give-proof-induction-that-the-squares-first-natural-numbers Fri, 21 May 2021 16:15:28 +0000 Sum of the Arithmetico-Geometric Progression (AGP) https://notexponential.com/231/sum-of-the-arithmetico-geometric-progression-agp <p><span style="font-size:16px"><span style="font-family:times new roman,times,serif"><strong>1 + 2•3 + 3•9 +&nbsp;<sup>…&nbsp;</sup>+ (k+1)•3<sup>k&nbsp;</sup>= ?&nbsp;</strong></span></span></p><p><span style="font-family:times new roman,times,serif">(k&nbsp;is&nbsp;a&nbsp;non-negative integer)</span></p> Math Basics https://notexponential.com/231/sum-of-the-arithmetico-geometric-progression-agp Wed, 31 Aug 2016 04:39:36 +0000