You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different.

How do you measure 45 minutes?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

In the Mexico City area, there are two Houses H1 and H2. Both H1 and H2 have two children each.
In House H1, The boy plays for Mexico Youth academy and the other child plays baseball.
In House H2, The boy Plays soccer for his school in Mexico and they recently have a newborn.

Can you prove that the probability of House-H1 having a girl child is more than that of House-H2?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

What have one eye but still cannot see?

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?

Which Burger Is Different in below image?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

I cannot talk, but I always reply when spoken to. What am I?