Six glasses are in a row. The first three are filled with milk and the last three are empty. By moving only one glass, can you arrange them so that the full and the empty glasses alternate?

Spot what is wrong here in below Picture?

Which tank will fill first?

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

What do you get if you add 2 to 100 four times?

What does man love more than life, and hate more than death or mortal strife; that which satisfied men want; the poor have, and the rich require; the miser spends, the spendthrift saves, and all men carry to their graves?

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?

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?