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?

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

In the addition below, all digits have been replaced by letters. Equal letters represent equal digits and different letters represent different digits.
ABCABA
BBDCAA
ABEABB
ABDBAA
------- +
AAFGBDH
What does the complete addition look like in digits?

Which Burger Is Different in below image?

What happened when the wheel was invented?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

Why did Buffon take the goal with him after every Juventus match?