Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Let 
and 
. If mean and variance of elements of 
are 17 and 216 respectively then 
is equal to:
A
7
B
C
9
D
Text Solution
Verified by ExpertsThe correct answer is:
D
JEE Main 2020
… (i)
Var 
andVar 
Var 
… (ii)
Clearly 
Hence 
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