MHT CET 2024 Mathematics question
The mean and variance of seven observations are 8 and 16 respectively. If 5 of the observations are 2,4,10,12,14 then the square root of product of remaining two observation is
Answer: (A)
Solution
Let the remaining two observations be and . Mean for observations: total . Known five sum to , so . Variance : , so . Known squares: , so
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