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?

What is wrong in the below Picture?

When monkey rotate the gear, which mark will be hit 1 or 2 ?

A woman lives in a skyscraper thirty-six floors high and is served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

Can you find out which number multiplied by itself will give the output as 12345678987654321?

This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it for a bit, you will find out why it is truly so unusual. So what is it? What is so unordinary about this paragraph?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

What is the coolest letter in the alphabet?

What is the largest number you can write with just 3 digits?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?