A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result.

Can you find how bias is the floor in this case?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

I am five letter word that is under you.
If you remove my 1st letter, then I am over you.
If you remove my 1st and 2nd letters then I am all around you.

Who am I?

How many letters are in the alphabet?

Can you identify the hidden rebus in the image below?

What is black when you buy it, red when you use it, and gray when you throw it away?

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

Seven Robbers robbed a bank and hide the coins in a lonely place.
They decide to divide the money equally the next morning. Two greedy robbers decided to cheat the others and reach the place at night. They equally divided the coins between them, one coin left. So they called another robber and then they decided to divide equally among the three. Sadly again one coin left. The same thing happened to the 4th 5th and the 6th robber.
However, when the 7th robber reached in the morning, they can divide the coins equally.

How many coins were there in total?