Question

Galera me ajuda a resolver esses fatoriais
1!+6!
4!+7!
6!+5!/4!

Answer 1

A) => 1*1 + 6*5*4*3*2*1 => 1 + 720 => 721. => B) 4*3*2*1 + 7*6*5*4*3*2*1 => 24 + 5040 => 5064 => C) 6*4*3*2*1 + (5*4!)/(4!) => 720 + (5*1)/1 => 720 + 5 => 725