There are three boxes which are labeled as Rs100, Rs150, and Rs200. One box contains two notes of Rs. 50. The second box contains one note of Rs50 and one note of Rs100 The third box contains two Rs. 100 notes. All boxes are labeled incorrectly.

What is the minimum number of boxes you must check in order to label all boxes correctly?

No matter how little or how much you use me, you change me every month. What am I?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

Can you find the dog hidden in a group of pandas?

Using eight eights and addition only, can you make 1000?

They are three errirs in this question. Can you find them?

Accidentally, two trains are running in the opposite direction and enter a tunnel that is 200 miles long. A supersonic bird that has fled the lab and taken shelter in the tunnel starts flying from one train towards the other at a speed of 1000 mph. As soon as it reaches the second train, he starts flying back to avoid collision and meets the first train again at the other end. The bird keeps flying to and fro till the trains collide with each other.

What is the total distance that the supersonic bird has traveled till the trains collided?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

You need to climb ten stairs. At every stair, you can either take one step up or you can jump two steps up.

In how many different ways you can climb 10 stairs?

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?