The sum of square of three positive integers is 323. If the sum of squares of two numbers is twice the third, their product is

The sum of three numbers is 252. If the first number is thrice the second and third number is two-third of the first, then the second number is

The product of two positive numbers is 11520 and their quotient is $$9\over5$$.Find the difference of two numbers?

A four digit number is formed by writing a two digit number together twice like: 15:15, -3737 etc. A number of this form will be exactly divisible by which of the following numbers 

The total number of digits used in numbering the pages of a book of 366 pages is

What should be the least added to 41116 so that the sum is divisible by 8?

If a shopkeeper buys 2 oranges for Rs.5 and sells 3 for Rs.7 only, then what percentage of loss and loss did he gain?

many times will the buttons of a typewriter be pressed to write the numbers 121 to 1346?