The least number which must be subtracted from 2361 to make it a perfect square is

x is a five - digit number. The digit in ten thousand's place is 1. The number formed by its digits in unit's and ten's places is divisible by 4. The sum of all the digits is divisible by 3 . If 5 and 7 also divide x, then x will be: 

The least number that must be subtracted from 1294 so that the remaining number when divided by 9, 11, 13 will leave in each case the same remainder 6 is:

Three numbers are such that if the average of any two of them is added to the third number, the sums obtained are 168, 174 and 180 respectively. What is the average of the original three numbers?

The greatest 4-digit number which is a perfect square is

The fourth root of 24010000 is 

How many times the keys of a typewriter have to be pressed in order to write number from 121 to 1346?

The product of two numbers is 45 and their difference is 4. The sum of squares of the two numbers is