Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

How can one talk without saying a single word?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

Count the squares in the matchstick puzzle below?

A mathematics teacher took exams for his students. Out of the total students, 25% passed both the tests included in the exam. However, only 42% were able to clear the first test.

Can you find out the percentage of those students who passed the first test and also passed the second test?

Give it food and it will live; give it water and it will die.

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

Solve the alphametic puzzle by replacing the alphabet with the number.

S T O R M +
S O L E S
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T O W E L
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A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

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.