Question

Calculați 1plus 1 pe 5 la puterea 2plus 1pe5lanputerea 3 plus 1'pen5 la puterea 4plus 1 pe 5 la puterea 5.

Answer 1

$1 +( \frac{1}{5} ) {}^{2} + ( \frac{1}{5} ) {}^{3} + ( \frac{1}{5} ) {}^{4} + ( \frac{1}{5} ) {}^{5} \\ \\ = 1 + \frac{1}{25} + \frac{1}{125} + \frac{1}{625} + \frac{1}{3125} \\ \\ = \frac{3125 + 125 + 25 + 5 + 1}{3125} \\ \\ = \frac{3281}{3125}$