Two integers r and s are drawn one at a time without replacement from – InterviewSolution

1.	Two integers r and s are drawn one at a time without replacement from the set 1,2,⋯n. If Pk=P(r≤k/s≤k), the value of 4P7 if n=25 is:
Answer» Two integers $r$ and $s$ are drawn one at a time without replacement from the set $1, 2, \dots n$ . If $P_{k} = P (r \leq k / s \leq k)$ , the value of $4 P_{7}$ if $n = 25$ is:

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