New posts in Geometric Progressions

Find the terms of a geometric progression given two partial sums.

Cover $\{1,2,...,100\}$ with minimum number of geometric progressions?

Is it possible to cover $\{1,2,...,100\}$ with $20$ geometric progressions?

Why is a geometric progression called so?

How to find a general sum formula for the series: 5+55+555+5555+.....?

Induction Proof that $x^n-y^n=(x-y)(x^{n-1}+x^{n-2}y+\ldots+xy^{n-2}+y^{n-1})$

What is the result of sum $\sum\limits_{i=0}^n 2^i$

Continued proportion implies $(a^2+b^2+c^2)(b^2+c^2+d^2)=(ab+bc+cd)^2$

Values of $\sum_{n=0}^\infty x^n$ and $\sum_{n=0}^N x^n$