Question:medium
If ${}^9P_5 = (504)({}^6P_r)$, then the value of $r$ is equal to:
If ${}^9P_5 = (504)({}^6P_r)$, then the value of $r$ is equal to:
Show Hint
Always simplify factorial expressions step-by-step instead of expanding fully.
Updated On: Apr 24, 2026
- $3$
- $2$
- $1$
- $4$
- $5$
Show Solution
The Correct Option is B
Solution and Explanation
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