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A die is thrown 100 times, getting an ev...

A die is thrown 100 times, getting an even number is considered a success. The variance of the number of successes is

A

50

B

25

C

10

D

100

Text Solution

Verified by Experts

The correct Answer is:
B
We have,n=100 and `p=3/6=1/2`. So q, `=1/2`
`therefore ` Variance `=npq=100xx(1)/(2)xx1/2=25`
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