Question

7. What is the value of 7P3? with permutations

Answer 1

\[7\times 6\times 5\]

Answer 2

210

Answer 3

840?

Answer 4

210 is right

Answer 5

\[n P r=\frac{n!}{(n-r)!}\]

Answer 6

that is the formula

Answer 7

\[7 P 3=\frac{7!}{(7-3)!}=\frac{7!}{4!}=\frac{7 \cdot 6 \cdot 5 \cdot 4!}{4!}=7 \cdot 6 \cdot 5 \]