Question (59/66)
If average of 2, 7, 6 and X is 5 and the average of 18, 1, 6, X and Y is 10, then find the value of Y?(A) 5
(B) 10
(C) 15
(D) 20
Question (60/66)
The arithmetic mean of the numbers 3, 11, 7, 9, 15, 13, 8, 19, 17, 21, 14 and X is 12. What should be the value of X then ?(A) 3
(B) 7
(C) 17
(D) 31