The mean of the numbers a, b, 8, 5, 10 is 6 and the variance is 6.80. Then which one of the following gives possible values of a and b

The mean of the number a,b,8,5,10 is 6 and the variance is 6.80 . Then ab =

The mean of numbers a,b,8,5,10 is 6 and their variance 6.80 ,then tan^(-1)((1)/(a))+tan^(-1)((1)/(b))=

The mean of 5 observations 1,2,6,x and y is 4.4 and their variance is 8.24 , then x+y is

The six-digit number 5ABB7A is a multiple of 33 for non-zero digits A and B. Which of the following could be possible value of A + B? 8 (b) 9 (c) 10 (d) 14

if the mean of 6,8,9 x,13,is 10, find the value of x.

If the mean of 6,4,7p and 10 is 8, find the value of p.

The mean of 6 number is 6.5 and its variance is 10.25 . If 4 numbers are 2,4.5 and 7 , then find the other two