ten coins are tossed the probability of getting exactly 7 heads is
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ghtrhjurrghjyrfght 3
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7 heads 10 coins
Probability of getting head in a coin = 1/2
Hence probability of 7 heads exactly is 10/7*(1/2)^7*(1/2)^3
= 1.4285714
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Exactly 7 heads 10 coins
Probability of getting head in a coin = 1/2
Hence probability of 7 heads is 10C7*(1/2)^7*(1/2)^3
= 120*(1/2)^7*(1/2)^3
= 0.1171875