In a group of 35 people, 23 of them like coffee, 24 of them like tea and each person likes at least one of the drinks. How many like both? 

Directions: Find the wrong number in the following number series:

2, 3, 8, 31, 154, 924, 6460

The sum of four numbers is 64. If you add 3 to the first number, 3 is subtracted from second number, the third is multiplied by 3 and the sum is divided by 3, then all the results are equal. What is the difference between the largest and the smallest of the original numbers?

What is the smallest digit that must be added to the product 5786 × 5784 to make it a perfect square?

A number when divided by 6 leaves remainder 3. When the square of the same number is divided by 6, the remainder is : 

The digit in unit’s place of the product 81 × 82 × 83 × ... × 89 is

Which of the following numbers is not a prime number?

The sum of the two - digit number is 6 and the number and its flip (digits written in reverse order) both are multiples of 3. If the difference between them is 36, then which of the following is the required number and its flip?