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Answer:
Step-by-step explanation:
This is a typical probability question where there is a large number of possible outcomes to be considered.
That suggests an approach where we look at the probability of it not occurring.
For that to happen, we have to have 5 coins all landing heads up. The probability of that happening is (1/2)5=1/32.
From this, we can deduce the probability of that not happening (i.e. there being at least one tail) is 1−1/32=31/32.