The average of 308, 125, 45, 120 and 102 is:

If the average of m numbers is n*n and that of n numbers is m*m , then the average of m+n numbers is

The average of 5 results is 46, and the average of the first 4 results is 45. What is the 5th result?

The average of the first 8 numbers is 42. The average of the first 4 numbers is 40, and the average of the next 3 numbers is 44. What is the 8th number?

The average of all prime numbers between 60 and 80 is:

Average weight of A, B and C is 50 kg. Average of A and B is 55 kg and average of B and C is 43 kg. Weight of B is