1.

If the mean and variance of the following data :6,10,7,13,a,12,b,12 are 9 and 374 respectively, then (a−b)2 is equal to

Answer»

If the mean and variance of the following data :

6,10,7,13,a,12,b,12 are 9 and 374 respectively, then (ab)2 is equal to



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