Question:medium
Two integers \(r\) and \(s\) are drawn one at a time without replacement from the set \(\{1, 2, \ldots, n\}\). Then \(P(r \leq k / s \leq k)\) is:
Two integers \(r\) and \(s\) are drawn one at a time without replacement from the set \(\{1, 2, \ldots, n\}\). Then \(P(r \leq k / s \leq k)\) is:
Show Hint
When selecting from a set without replacement, consider the total number of ways to select and the number of favorable outcomes, then calculate the probability.
Updated On: Nov 28, 2025
- \(\frac{k}{n}\)
- \(\frac{k}{n-1}\)
- \(\frac{k-1}{n}\)
- \(\frac{k-1}{n-1}\)
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