If the sum of the digits of any integer lying between 100 and 1000 is subtracted from the number, the result always is : 

If for a certain quantity of books, the publisher has to pay Rs. 30,600 as printing cost, then what will be the amount of royalty to be paid for these books?

Compared to the month of January, what is the percentage of decrease in accidents in the month of February?

The maximum number of students among whom 1001 pens and 910 pencils can be distributed in such a way that each student gets same number of pens and same number of pencils, is: 

How many positive integers less than 1000 are multiples of 11 whose square roots are whole numbers

The sum of the squares of three numbers is 532 and the ratio of the second and also of the second to the third is 3 : 2 . What is the second number?

Salary of a person is first increased by 20 %, then it is decreased by 20 %. Then the percentage change in his salary is: