1.

1). 1/42). 1/23). 3/44). 1

Answer»

We know that,

When a coin is tossed, there are only two possible OUTCOMES, either heads or tails

We know that the sample SPACE S = {HH, HT, TH, TT}

The EVENT E that at least one of them is head = {HH, HT, TH}

Probability P(E) = n(e)/n(s) = 3/4

The probability of getting at least one head is ¾


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