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Assume that when adults with smartphones are randomly​ selected, 37​% use them in meetings or classes. If 9 adult smartphone users are randomly​ selected, find the probability that exactly 2 of them use their smartphones in meetings or classes.

A. Assume that when adults with smartphones are randomly​ selected, 41​% use them in meetings or classes. If 20 adult smartphone users are randomly​ selected, find the probability that exactly 12 of them use their smartphones in meetings or classes.
B. Assume that when adults with smartphones are randomly​ selected, 45​% use them in meetings or classes. If 6 adult smartphone users are randomly​ selected, find the probability that at least 3 of them use their smartphones in meetings or classes

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Explanation:

if john has 12 apples how many does brandon have

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