In case you were starting to feel confident, this one was meant for third graders in Vietnam. The answer is 66, but we don't blame you for scratching your head about how they got there.

John buys rice at Rs.60/kg from Britain and then sells them at Rs.5/kg in India. As a result of this, he becomes a millionaire. How come?

What number divided by 4 is the same as that number minus 4?

The doctor prescribed you to take one pill from the bottle every half an hour. The bottle is now left with only three pills.

How long do you think you have before you run out of pills?

Count the squares in the matchstick puzzle below?

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

Suppose you are a girl candidate and sitting in an interview. Suddenly the interviewer asks you, 'What if one morning you wake up and find out that you are pregnant?

How will you reply to such a question?

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?