You are given with the following sum. Each of the letters can be decoded as a digit. If we tell you that D = 5, then can you solve it entirely?

DONALD
+GERALD
=ROBERT

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

John and Jill are madly in love with each other. To remind Jill of his pure love, John wants to send her a ring by post but in their country where burglary is quite prominent, any package that is not locked comes under the risk of being stolen for the contents.

John and Jill possess many padlocks but neither one of them has the other key.

Can you find a way John can send the ring to Jill safely?

How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?

We know that the number 7 is the prime followed by a cube. Which next number is also a prime followed by a cube?