Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

You are mixing a mixture of cement and Sand with five gallons of water. You have a garden hose giving you all the water you need. The problem is that you only have a four-gallon bucket and a seven-gallon bucket and neither has graduation marks. Find a method to measure five gallons.

The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?

Can you count the number of matches in the picture below ?

Find the next number in the sequence

5 12 24 36 ?

You are on a Boat in the mid of a river. You have two cigarettes with you. One of these two you have to light, how will you light the cigarette?

What is the next number in the series?

15 29 56 108 208 ?

A Shopkeeper sold a few chickens to four different customers on a particular day. It was such that each customer purchased half of the remaining chickens and half the chicken more.

Can you find out how many chicken were sold by the shopkeeper on that day if we tell you that the fourth customer bought a single chicken ?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"