Three coins are tossed simultaneously. Find the probability of getting (1) exacts 2 heads (2) at least 2 heads.
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3 coins are tossed = 2^3 = 8
1) Probability of getting exacts 2 heads = {THH,HHT,HTH}
= 3/8
2) At least 2 heads = {HTH,HHT,THH,HHH}
= 4/8
= 1/2.
1) Probability of getting exacts 2 heads = {THH,HHT,HTH}
= 3/8
2) At least 2 heads = {HTH,HHT,THH,HHH}
= 4/8
= 1/2.
bhoj:
thanks
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