Can you start the fire using two pieces of wood?

How can you take 2 from 5 and leave 4?

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

A Shopkeeper sold a few chickens to four different customers on a particular day. It was such that each customer purchased half of the remaining chickens and half the chicken more.

Can you find out how many chicken were sold by the shopkeeper on that day if we tell you that the fourth customer bought a single chicken ?

In a chess board, the queen piece can move horizontally, vertically and diagonally freely. The picture represents the same.Can you place 8 queens on the board in a manner that none of the queens can attack each other?

The following four words might seem abrupt to you. But you can make them meaningful by just adding vowels.
RDSH
GGPLNT
TMT
NN

Hint: All of them are vegetables.

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

what does this below rebus represent identXQQQQQME

Can you count the number of triangles inside a triangle?