Question

gente me ajudem aq pof

Answer 1

A)

$\LARGE\tt{} \dfrac{14 \times 13 \times 12 \times 11!}{11!} \\ \\ \LARGE\tt{} \frac{14 \times 13 \times 12 \times \cancel{11!}}{\cancel{11!}} \\ \\ \LARGE\tt{}14 \times 13 \times 12 \\ \LARGE\tt{}14 \times 156 \\ \LARGE\tt{}{\large\boxed{\boxed{  { \LARGE \tt 2184 }}}}$

B)

$\LARGE\tt{} \dfrac{29! + 30!}{28!} \\ \\ \LARGE\tt{} \dfrac{29! + 30 \times 29!}{28!} \\ \\ \LARGE\tt{} \dfrac{31 \times 29!}{28!} \\ \\ \LARGE\tt{} \dfrac{31 \times 29 \times 28!}{28!} \\ \\ \LARGE\tt{} \frac{32 \times 29 \times \cancel{28!}}{\cancel{28!}} \\ \\ \LARGE\tt{}32 \times 29 \\ \\ {\large\boxed{\boxed{  { \LARGE \tt 899}}}}$