Question

15. Simplify 6P2

A. 30
B. 15
C. 12
D. 720

Answer 1

\[
^{\color{red}{6}}P_{\color{blue}{2}} = \frac{\color{red}{6}!}{(\color{red}{6}-\color{blue}{2})!} = \frac{6!}{4!} = \frac{6\times 5 \times \cancel{4!}}{\cancel{4!}} = 6\times 5
\]

Answer 2

:D Thanks!