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?

I look at you, you look at me, I raise my right, you raise your left. What am I?

By moving just one matchstick, you need to make the below statement true. Can you do it?

Can you make a six-letter word using the letters N, A and B ?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

Tell me the Hindi name of a Vegetable which if we remove 1st word will become a precious Stone and by removing the last word it will become a sweet eatable.

Can you place six X (crosses) in below board without making three in a row in any way ?

You know three triplets: Frank John and Wayne (need to return your money). Frank always tells the truth while John and Wayne always lie. You meet one of them on the road and can ask him a three-word question.
Which question, will you ask?

There is something which is always coming but never arrives?

If two fifty-foot ropes are suspended from a forty-foot ceiling that is twenty feet apart, how much rope will you be able to steal if you have a knife?