Question

Simplify! :)

Answer 1

21

Answer 2

Thank you :)

Answer 3

\[\Large ^7C_2= \frac{7!}{(7-2)!2!}= \frac{7!}{5! \times 2!}= \frac{7 \times 6 \times 5!}{5! \times 2!}=7 \times 3=21\]

Answer 4

Thank you :)

Answer 5

Anytime :)