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The mean of the numbers a, b, 8, 5, 10 i...

The mean of the numbers a, b, 8, 5, 10 is 6 and the variance is 6.80. Then which one of the following gives possible values of a and b ?

A

a=3,b=4

B

a=0,b=7

C

a=5,b=2

D

a=1,b=6 .

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