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?

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.

There are forty elephants and they have forty-fore heads. How can this be possible?

Can you find the odd one out from the below words ?

First Second Third Forth Fifth Sixth Seventh, Eighth Nine Ten Eleven Twelve.

Solve the puzzle by telling what does below picture means.

In front of you, there are 9 coins. They all look absolutely identical, but one of the coins is fake. However, you know that the fake coin is lighter than the rest, and in front of you is a balance scale. What is the least number of weightings you can use to find the counterfeit coin?

Can you tell a 3D object that has just two surfaces?

Find the number of squares in the below-given picture.

How can you take 2 from 5 and leave 4?

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