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?

You need to move three matchsticks to form three squares. Can you do it?

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

What kind of band never plays music?

We are a group of eight brothers. We consider the weak, yet we protect the king in every battle. If we move ahead, we never turn back. Who are we?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

How many words can a pen with half refill write?