Question

cálcule c9, 3 + c4, 2=

Answer 1

Boa noite!

$\frac{9!}{3!6!} + \frac{4!}{2!2!} = \frac{9.8.7}{3.2.1} + \frac{4.3}{2.1} = \frac{504}{6} + \frac{12}{2} = 84 + 6 = 90$