In an office, there are 108 tables and 132 chairs. If of the tables and of the chairs are broken. How many people can work in the office if each person requires one table and one chair? 

A boy added all natural numbers from 1 to 10, however, he added one number twice due to which the sum becomes 58. What is the number which he added twice? 

How many two-digit numbers are divisible by 3 but not by 7?

Sum of two numbers is 15 and sum of their reciprocals is . The two numbers are

In a school of the boys are same in number as of the girls and   of the girls are same in number as    of the boys. The ratio of the boys to girls in that school is: 

When n is divided by 6, the remainder is 4. When 2n is divided by 6, the remainder is : 

A number x when divided by 289 leaves 18 as the remainder. The same number when divided by 17 leaves y as a remainder. The value of y is 

A, B, C and D purchase a gift worth Rs. 60. A pays of what others are paying. B pays of  what others are paying and C  pays of what others are  paying. What is the amount paid by D?