The mean of five numbers is 12 and four of four of those are 8, 11, 13 and 17. Find the fifth number.

The mean of 7 numbers is 12, Four of the 7 numbers are 10,14,15, and 17. The remaining three numbers are in the ratio 1 : 2 : 4. Find these three numbers.

The mean of the five numbers is 50 out of which the mean of the 4 numbers is 46, find the fifth number ?

The mean of five numbers is 0 and their variance is 2. If three of those numbers are - 1,1 and 2 , then the other two numbers are

The mean of five numbers is 0 and their variance is 2 .If three of those numbers are -1,1 and 2, then the other two numbers are

The mean of five numbers is 0 and their variance is 2 .If three of those numbers are -1,1 and 2, then the other two numbers are

Average of four numbers is 10.5. If three of these numbers be 4, 9 and 13, find the fourth number.

Average of four numbers is 10.5. If three of these numbers be 4, 9 and 13, find the fourth number.

The mean of three numbers is 10. The mean of other four numbers is 12. Find the mean of all the numbers.

There are four unknown numbers. The mean of the first two numbers is 4 and the mean of the first three is 9. The mean of all four numbers is 15, if one of the four numbers is 2 find the other numbers.