The AM of n observations is M. If the sum of `n-4` observations is a, then the mean of remaining 4 observations is

The A.M. of n observations is M. If the sum of n - 4 observations is a, then the mean of remaining 4 observations is :

The A.M. of n observation is X. If the sum of n-4 observation sis K, then the mean of remaining observations is

AM of n observations is M.If the sum of (n-5) observations is R, then mean of remaining 5 observations is

The mean of 12 observations is 75. If two observations are discarded, then the mean of the remaining observations is 65. What is the mean of the discarded observations?

The mean of 10 observations is 12. If mean of first 6 observations is 13. Find the mean of remaining 4 observations.

The mean of 10 observations is 12. If mean of first 6 observations is 13. Find the mean of remaining 4 observations.

The mean of 50 observations is 36. If its two observations 30 and 42 are deleted,then the mean of the remaining observations is

The mean of 50 observations is 36. If two observations 30 and 42 are deleted, then mean of the remaining observations is