Engineering
Mathematics
Conditional Probability
Question

A coin is tossed three times. Find P(A / B) in given cases:
A = At least two heads, B = At most two heads

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Solution
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We have,

= {HHHHTHTHHHHT} ; = {TTTTTHHTTTHTHHTTHHHTH}

∴ P(AB) = 3 and P(B) = 7
∴ P(A/B)=P(AB)P(B)=37
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