Find r , if 5 4 P r = 6 5 P r– 1 Options: A . &nbsp3 or 5 B . &nbsp3 or 8 C . &nbsp5 or 4 D . &nbsp5 or 6

Find r , if 5 4 Pr = 6 5Pr

Question

Find r , if 5 ⁴ P_r = 6 ⁵P_{r– 1}

Options:

A . 3 or 5

B . 3 or 8

C . 5 or 4

D . 5 or 6

Answer: Option B

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