Question

Evaluate 7P3.

Answer 1

\[nPr = \frac{n!}{(n - r)!}\]\[7P3 = \frac{7!}{(7 - 3)!}\]\[7P3 = \frac{7!}{4!}\]\[7P3 = \frac{7\cancel!}{\cancel{4!}}\]\[7P3 = 7 \times 6 \times 5 = ?\]