There are 4 numbers. If we leave the first number, the average of the remaining becomes 30. If we leave the second number, the average of the remaining becomes 25, while, if we leave the third number, the average of the remaining becomes 50. If we leave the fourth number, the sum of the remaining becomes 135. Find the average of the 4 numbers?

There are 4 natural numbers. If average of any 3 numbers is added with the fourth, 28, 21,18 or 25 will be obtained. Find the average of the original 4 numbers

The average of six numbers is 30. If the average of first four is 25 and that of last three is 35, the fourth number is:

The average of twelve positive numbers is 15. If the average of the first four numbers is 9 and that of the last four numbers is 26. What is the average of the remaining four numbers?

The average of 6 numbers is 60. If the average of first four is 50 and that of last three is 70, the fourth number isOptions353050None of these

The average of 23 numbers is 77. If each number is divided by 4, then the average of new set of numbers is: