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A set 'S' contains 7 elements. A non-e...

A set 'S' contains `7` elements. A non-empty subset A of S and an element 'x' of S are chosen at random. Then the probability that `x in A` is

A

`(1)/(2)`

B

`(64)/(127)`

C

`(63)/(128)`

D

`(31)/(128)`

Text Solution

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The correct Answer is:
B
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DISHA PUBLICATION-PROBABILITY-1-EXERCISE-1 : CONCEPT BUILDER
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