When 4 fair coins are tossed together what is the probability of getting at least 3 heads?
Answer with explanationAnswer: Option C
When 4 fair coins are tossed simultaneously, the total number of outcomes is 24 = 16
At least 3 heads implies that one can get either 3 heads or 4 heads.
One can get 3 heads in 4C3 = 4 ways and can get 4 heads in 4C4 = 1 ways.
∴ Total number of favorable outcomes = 4 + 1 = 5
====>>> The required probability = 1/4.
The answer is 5/16 because in total there are 16 possibilities when tossing a coin 4 times. I.e. 2⋅2⋅2⋅2=242⋅2⋅2⋅2=24.
And the possibilities of getting atleast three head is 5 that is we can get HHHT, HHTH, HTHH, THHH, and HHHH
Thus, the answer is 5/16.
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