Question

Three coins are tossed simultaneously.What is the probability that at least two of them show head?

Answer 1

For each coin, there are two possibilities, heads or tails, so for the three coins, the number of possibilities is = 8 possibilities
= HHH / HHT / HTH / THH / TTT / TTH / THT / HTT

Out of these total possibilities, there are four ways to get two heads:

HHT / HTH / THH / HHH

So, the chances of getting at least two heads when tossing three coins at the same time is 4/8 or 1/2

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