On one occasion, A Boy collects 71 rupees in form of 20 paise and 25 paise. He collects a total of 324 coins.

Can you tell me how many 20-paisa and 25-paisa he got?

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

A man has eighty-one cows ( numbered 1,2,3...81 as such). The beauty is that cow no. 1 gives 1ltr of milk, cow no. 2 gives 2ltrs of milk and so on. The man wants to equally distribute the cows among his nine sons so that each one of them gets the same quantity of milk.

4 fathers, 2 grand-fathers and 4 sons went to watch the movie.What is the minimum number of tickets they need to buy ?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

What number comes next in this sequence:
7 8 5 5 3 4 4 _