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An unbiased coin is tossed eight times. ...

An unbiased coin is tossed eight times. The probability of obtaining at least one head and at least one tail is :

A

`255/256`

B

`127/128`

C

`63/64`

D

`1/2`

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The correct Answer is:
B
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DISHA PUBLICATION-PROBABILITY -2-EXERCISE - 2 : CONCEPT APPLICATOR
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