Question

Aratati in Cate zerouri se termina numarul n=1x2x3x4x...x30

Answer 1

Numeri cate numere divizibile cu 2 si cu 5 ai: 5,10,15,20,25 si 30 deci se termina in 7 zerouri

Answer 2

 [tex][\frac{30}{5^1}]=6\;;\;[\frac{30}{5^2}]=1\;;\;[\frac{30}{5^3}]=0\;;\\ n\;se\;va\;termina\;in:6+1=7\;zerouri;[/tex]