Manish and Manoj play 5 games of chess.
Both Manish and Manoj win the exact same number of games. There is no tie at all.

How?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

A boy and a girl are sitting on the porch.
"I'm a boy," says the child with black hair.
"I'm a girl," says the child with red hair.
If at least one of them is lying, who is which?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

If a shopkeeper can only place the weights on one side of the common balance. For example, if he has weights 1 and 3 then he can measure 1, 3 and 4 only. Now the question is how many minimum weights and names of the weights you will need to measure all weights from 1 to 1000? This is a fairly simple problem and very easy to prove also.

Nodes are shown below and you need to connect them based on the following rule: Every node can be connected to the number of nodes inside them, i.e. the first node there is a value of 1 which indicates that the first node can connect to exactly one node only.Can you do it?

What number should come in place of the question mark below?

What is the Surname of Barbie Doll?

Find the missing number in the sequence below:

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?