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?

Can you write down eight eights so that they add up to one thousand?

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

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

In the image below, can you find the value of an angle(y)

Why is the longest human nose just 11 inches?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

You are playing a game with your friend Jack. There are digits from 1 to 9. You both will take turn erasing one digit and adding it to your score. The first one to score 15 points will win the game.

Would you want to play first or second?

PS: The sum should be exactly 15.

Who has married many women but was never married?