Two unbiased coins are tossed. What is probability of getting at most one tail ?	Choose the correct choice from the following options
A) 12  B) 13  C) 32  D) 34  E) None of these
Explanation:   Total 4 cases = [HH, TT, TH, HT]   Favourable cases = [HH, TH, HT]   Please note we need atmost one tail, not atleast one tail.   So probability = 3/4   Answer: 34
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Two unbiased coins are tossed. What is probability of getting at most one tail ?