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?

What is the word or phrase?

Find the next number in the series below

21 32 54 87 131 ?

Use the numbers 2, 3, 4 and 5 and the symbols + and = to make a true equation. Conditions: Each must be used exactly once and no other numbers or symbols can be used.

This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it for a bit, you will find out why it is truly so unusual. So what is it? What is so unordinary about this paragraph?

Prove that twice of ten is the same as twice of eleven.

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

How can you drop a raw egg from a height onto a concrete floor without cracking it?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?