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If the mean of the numbers a, b, 8, 5, 1...

If the mean of the numbers a, b, 8, 5, 10 is 6 and their variance is 6.8, then ab is equal to

A

a=0,b=7

B

a =5, b = 2

C

a=1, b= 6

D

a=3,b=4

Text Solution

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The correct Answer is:
D
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