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If X is a random variable such that sigm...

If X is a random variable such that `sigma(X)=2.6," then "sigma(1-4X)` is equal to,

A

`7.8`

B

`-10.4`

C

13

D

`10.4`

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The correct Answer is:
D
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CHHAYA PUBLICATION-QUESTIONS PAPER -2019-WBJEE 2019
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