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Q50Section C (Section C)50 of 60

Exactly two pairs among five shoes

A drawer contains 55 pairs of shoes of different sizes. Assume that all 1010 shoes are distinguishable. A person selects 55 shoes from the drawer at random. Then the probability that there are exactly 22 complete pairs of shoes among these 55 shoes is equal to __________ (round off to 2 decimal places)

Numerical answer: type the number (no options).

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