[" Wositive integers starting with 1is written on a blackboard.Then,one number is erased,and the resulting AM of the rem "],[" The erased number is "]

A set of consecutive positive integers starting with one is written on blackboard and one number is erased and thus the A.M of the remaining numbers is found to be 35((7)/(17)) The erased number is

A set of consecutive positive integers beginning with 1 is written on the blackboard. A student came along and erased one number. The average of the remaining numbers is 35(7)/(17) . What was the number erased?

The integers 1, 2, …., 40 are written on a blackboard. The following operation is then repeated 39 times, In each repetition, any two numbers, say a and b, currently on the blackboard are erased and a new number a+b-1 is written. What will be the number left on the board at the end?

If the positive integers are written in a triangular array as shown below, then the row in which the number 2010 will be, is

Let N be the least positive integer such that whenever a non-zero digit c is written after the last digit of N, the resulting number is divisible by c. The sum of the digits of N is

The A.M. of two given positive numbers is 2. If the larger number is increased by 1, the G.M. of the numbers becomes equal to the A.M. of the given numbers. Then find the H.M.

The A.M. of two given positive numbers is 2. If the larger number is increased by 1, the G.M. of the numbers becomes equal to the A.M. of the given numbers. Then find the H.M.

The A.M. of two given positive numbers is 2. If the larger number is increased by 1, the G.M. of the numbers becomes equal to the A.M. of the given numbers. Then find the H.M.