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Question: Three coins are tossed if one of them shows tail then the probability that all three coins show tai...

Three coins are tossed if one of them shows tail then the

probability that all three coins show tail is

A

1/7

B

1/8

C

2/7

D

1/6

Answer

1/7

Explanation

Solution

P [ All tail  one shows tail ]\left[ \frac { \text { All tail } } { \text { one shows tail } } \right]= 17\frac { 1 } { 7 }