Question 1186757
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In fact, the way the problem is stated, the question can't be answered, because it is not clear.<br>
Adding "5 school days in a week" as a parenthetical expression does NOT define the problem.<br>
The question might be asking for the probability that he comes to school today, or all 5 days this week, or at least 3 out of 5 days next week, or......<br>