In taking a multiple-choice test, there are four possible answers for each problem, only one of which is correct. Assume that someone guesses randomly on all 25 problems.What is the probability of getting the first problem wrong?

There are four equally likely answers, and only one is correct. That means three of the four choices are wrong, so the probability of guessing incorrectly on the first problem is 3/4 = 0.75. The correct choice is 0.75.

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