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If a fair die is rolled 5 times,what is ...

If a fair die is rolled 5 times,what is the probability that two of the rolls will show `1's` is

A

`0.18`

B

`0.16`

C

`0.14`

D

`0.12`

Text Solution

Verified by Experts

The correct Answer is:
0.16
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  14. LetX~B(n,p)(ii)If E(X)=5 and Var(X)=2.5,find n and p.

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