IF a coin is tossed twice and X is the n...

IF a coin is tossed twice and X is the number of tails, then E(X)=
(a) `0`
(b) `1`
(c) `2`
(d) `3`

A

(a) `0`

B

(b) `1`

C

(c) `2`

D

(d) `3`

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The correct Answer is:

B

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