A computer’s random number generator produces random integers from 1 to 50. What is the probability that at least one of the first 4 generated numbers is in the 20s?

There are 10 integers in the 20s out of 50, so each number has probability 10/50 = 0.2 of being in the 20s. The probability that none of the first 4 numbers is in the 20s is 0.8⁴ = 0.4096. Therefore, the probability that at least one is in the 20s is 1 − 0.4096 = 0.5904, choice D.

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