You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

I have branches, but no fruit, trunk or leaves. What am I?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

The horse jumps over the king.
Strangely there is absolutely no scratch on him.

Can anyone explain, how is this possible?

A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

You walk into a room where there are three primates held in their respective cages:
1) A lion who is eating the flesh of a goat.
2) An orangutan who is playing with blocks.
3) A donkey who is sitting idle.

Who is the most intelligent primate in the room?

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?