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? 

The smallest positive integer, which when multiplied by 392 gives the product a perfect square number, will be :

The smallest number, which when added to 680621 gives the sum a perfect square number, will be

In the number 15!/100, which digit will be in the unit's place?

1! + 2! + 3! + 4! + ......... + 50! Find the unit digit of?

If the 8 digit number 789x531y is divisible by 72, then the value of (5x - 3y) will be?

When a number is divided by 192 the remainder is 54. What will be the remainder when the same number is divided by 16?

For which value of x the seven-digit number 8439x53 is divisible by 99?