general/geometric-series
Surf Wiki
1/2 + 1/4 + 1/8 + 1/16 + ⋯
Infinite series summable to 1
1/4 + 1/16 + 1/64 + 1/256 + ⋯
Infinite series summable to 1/3
Infinite series summable to 1
Infinite series summable to 1/3