They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

Who can jump higher than a Mountain?

In a school, there are four subjects. Seventy percent of students study English, seventy five percent of students study Science, eighty five percent of students study Mathematics and eighty percent of students study Spanish.

Can you calculate the percentage of students that study all four subjects?

Can it be possible to build a house that has all its four walls facing towards the South?

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

Can you count the number of quadrilaterals in the picture below?

Using eight eights and addition only, can you make 1000?

I cannot talk, but I always reply when spoken to. What am I?

If your uncle’s sister is not your aunt, what relation is she to you?