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

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

Find out the missing number in the picture attached:

What is the end of everything?

100 prisoners are stuck in the prison in solitary cells. The warden of the prison got bored one day and offered them a challenge. He will put one prisoner per day, selected at random (a prisoner can be selected more than once), into a special room with a light bulb and a switch which controls the bulb. No other prisoners can see or control the light bulb. The prisoner in the special room can either turn on the bulb, turn off the bulb or do nothing. On any day, the prisoners can stop this process and say "Every prisoner has been in the special room at least once". If that happens to be true, all the prisoners will be set free. If it is false, then all the prisoners will be executed. The prisoners are given some time to discuss and figure out a solution. How do they ensure they all go free?

John has eleven friends. He has a bowl containing eleven apples. Now He wants to divide the eleven apples among his friends, in such a way that an apple should remain in his bowl.
How can He do it?

Find the next number in the series below

21 32 54 87 131 ?

What do you call a fish without an eye?

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3