Question: 2.16. A box contains tags marked 1, 2,..., n. Two tags are chosen at random. Find the probability that the numbers on the tags will

2.16. A box contains tags marked 1, 2,..., n. Two tags are chosen at random. Find the probability that the numbers on the tags will be consecutive integers if

(a) the tags are chosen without replacement,

(b) the tags are chosen with replacement.

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A box contains tags numbered 1, 2, ..., n. Two tags are chosen without replacement. What is the probability they are consecutive integers?

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