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

A man dies of old age on his 25 birthday. How is this possible?

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Which is Odd One Out and why?

4377

3954

9862

8454

9831

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?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

What is common among 11, 69, and 88?

If 1+9+8=1, what is 2+8+9?

As we know that white starts the game of chess. Can you find the scenario shown in the picture below is possible when all the white pieces are at the original place while the black pawn is not as in the below picture?

What has many teeth, but cannot bite?