Permutation of n distinct objects taken r at a time

Rarely Tested
$$ P(n, r) = \frac{n!}{(n-r)!} \quad \mathrm{for } 0 \leq r \leq n $$

Number of ways to arrange r distinct objects from n distinct objects in a sequence.

No related questions available for this formula yet.

Go back to topics

Join CAT 2026 course by 5-Time CAT 100%iler

Start your IIM journey with the right preparation and crack CAT 2026.

Enroll Now