Question

Stabiliti cate zerouri si cate cifre are numarul: A= 2 la puterea 2n+1 ori 5 la puterea 2n+3 , nEN3 DAU CORONIȚĂ!!!

Answer 1

A=$2^{2n+1} * 5^{2n+3} = 2^{2n} * 2^{1} * 5^{2n} * 5^{3} = 2^{2n} * 5^{2n} *2*5* 5^{2} = (2*5)^{2n}$$*10*25= 10^{2n+1} *25$
A are 2n+ 1 zerouri si 2n+1+2 =2n+3 cifre