The mean of 100 numbers is 55. IF the mean of the 40 numbers is 61, find the mean of the remaining 60 numbers.

Out of 25 numbers, the mean of 15 numbers is 36 and the mean of the remaining numbers is 26, find the mean of all the 25 numbers.

Out of 25 numbers, the mean of 15 numbers is 36 and the mean of the remaining numbers is 26, find the mean of all the 25 numbers.

The mean of 4 numbers is 6 and the mean of other 6 numbers is 9. Find the mean of all the numbers.

The mean of six numbers is 23. If one of the numbers is excluded , the mean of the remaining numbers is 20. find the excluded number.

The mean of set of seven numbers is 81. If one of the numbers is discarded, the mean of the remaining numbers is 78. The value of the discarded number is

The mean of a set of eight numbers is 63. If one of the numbers is discarded, the mean of the remaining numbers is 58. The value of discarded number is

The mean of a set of seven numbers is 81. If one of the numbers is discarded, the mean of the remaining numbers is 78. The value of discarded number is 98 (b) 99 (c) 100 (d) 101

The mean of a set of seven numbers is 81. If one of the numbers is discarded, the mean of the remaining numbers is 78. The value of discarded number is 98 (b) 99 (c) 100 (d) 101

The mean of six numbers is 23. if one of the number is excluded, the mean of the remaining numbers is 20. find the excluded number.