Mean and variance of five observations a...

Mean and variance of five observations are `4` and `5.2` respectively. If three of these observations are `3, 4, 4` then find absolute difference between the other two observations (A) `3` (B) `7` (C) `2` (D) `5`

A

1

B

3

C

7

D

5

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The correct Answer is:

C

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