The price of a pen, a book and a shirt are 56, 72, and 120 respectively. How much minimum rupees should a person take with him so that after purchasing either of articles in whole numbers he saves 20.

Three different containers contain 130 liter, 442 liter and 234 liter of milk, respectively. What biggest measure can be used to measure all the containers exactly?

Evaluate 743 x 999.

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