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?

How is a fly different from a mosquito?

2, 3, 5, 9, 17, _ What is the next number in the sequence?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

The dirtier I get, the whiter I look. Who am I?

Can you divide the below-given shape into four equal and identical pieces?

Can you spot the man between the coffee bean in the picture below ?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

The first box has two white balls. The second box has two black balls. The third box has a white and a black ball.

Boxes are labeled but all labels are wrong!

You are allowed to open one box, pick one ball at random, see its colour and put it back into the box, without seeing the colour of the other ball.

How many such operations are necessary to correctly label the boxes?

John and Jill are madly in love with each other. To remind Jill of his pure love, John wants to send her a ring by post but in their country where burglary is quite prominent, any package that is not locked comes under the risk of being stolen for the contents.

John and Jill possess many padlocks but neither one of them has the other key.

Can you find a way John can send the ring to Jill safely?