Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

In the given picture, you can find two letters missing. When two particular letters are placed in the missing spots, you get an eight-letter word while reading in the anti-clockwise direction. Can you find out the missing letters and the missing word eventually?

There are four 3-link chains. All you have to do is join them into a big 12-link chain. For joining two closed links, one of the links must be cut and placed onto the other link for closing.

How many minimum links will you have to cut to make the big chain?

Find the missing number in the sequence below:

What has 88 keys?

French Police inspects a room where there are no windows, no doors, no tables and is almost empty expect there is just a puddle of water. They found a dead man who obviously hung herself from the ceiling, but they are not able to figure out how this had happened.

John and Jacob entered the crime scene and easily able to solve the case.

How did the man die?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?