You have a roll of cloth 1km long. You have a machine which cuts this roll into pieces of 10-meter-long cloth.

How long would it take for the machine to cut the roll if each cut took 4 secs?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

You have 1023 apples and 10 bags. You have to distribute these apples in these 10 bags in any way you choose. But when I ask for a certain number of apples you have to give them in terms of bags without transferring the apples from other bags. How do you distribute the apples?

Why do people go to bed?

Before Mount Everest was discovered, what was the highest mountain in the world?

What can go through glass without breaking it?

Complete the table series riddle by finding the number that can replace "??".

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?

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"