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?

What always comes into a house through the keyhole?

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

An exterior architect is asked by a builder to plant seven trees in a manner that there are exactly six rows of trees in a straight line and each row has three trees in particular.

How will he do it?

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

I was born in a small house and I live in it all alone. No windows and no doors have been assigned to my house. The only way I can go out is by breaking through the walls of my house.

Who am I?

Two men play a dice game involving roll of two standard dice. Man X says that a 12 will be rolled first. Man Y says that two consecutive 7s will be rolled first. The men keep rolling until one of them wins.

What is the probability that X will win ?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

A fresh card pile is taken out of a box (the pile has 54 cards including 2 jokers). One joker is taken out and then the cards are shuffled for a good amount of times. After shuffling, two piles are made by dividing that one pile.



What is the possibility that one of the piles will have a card sequence from A to K in order?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?