What is the smallest positive integer n such that 2n is a perfect square and 3n is a perfect cube?

Short answer 2 * 2 * 2 * 3 * 3

When you multiply by 2 you get 144 which is a perfect square.
When you multiply by 3 you get 216 which is a perfect cube

So the answer is 2 * 2 * 2 * 3 * 3 = 72

Uneed to add them up 27+18+23=68

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post