Răspuns :
1+3+5+7+9+11+13+15 = 16 x 4 = 64 = 4 la puterea a 3-a => raspunsul corect este B) 4
1+3+5+...+15=n²
unde n=nr de termeni
n=(1+15)/2=16/2=8
deci x³=8²
x³=(2³)²=(2²)³
⇒x=4
deci B e raspunsul corect
O sear abuna!
unde n=nr de termeni
n=(1+15)/2=16/2=8
deci x³=8²
x³=(2³)²=(2²)³
⇒x=4
deci B e raspunsul corect
O sear abuna!