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in Introduction to Probability Theory by (47.8k points)
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Ten coins are tossed. The probability of getting at least 8 heads is …

(a) 7/64

(b) 7/32

(c) 7/16

(d) 7/128

1 Answer

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Best answer

(d) 7/128

When 10 coins are tossed, no. of element in sample space 

n(S) = 210 = 1024 

Probability of getting atleast 8 heads

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