Two distinct numbers are selected simultaneously and at random from the set {1, 2, 3, 4, 5}. What is the probability that the smaller one divides the larger one? Express your answer as a common fraction.
2026-03-26 06:26:37.1774506397
Could use some help in probability question
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There are $\binom{5}{2}=10$ choices of this pair. The ones that qualify are the four of the form $(1,\,n)$ and $(2,\,4)$, and the answer is $\frac12$.