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

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

what does this below rebus represent identXQQQQQME

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

What makes this number unique: 8,549,176,320?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

Intelligence Agency need to break the vault but the problem is that they are not able to break the vault.

On the vault, a text is written as:

31 11 33 33 43 45
21 25
31 24 11 31 51 41

To Break the code Intelligence Agency brings a mathematician named Joseph.
Minutes later he deciphers the code.

Whats the code?

One night, a woman receives a call from the police. They tell her that her husband was murdered and that she should come to the crime scene as soon as possible. The woman drops the phone, shocked, and drives 20 minutes to the crime scene. As soon as she reaches the crime scene, the police arrest her and she is convicted of murder. How do the police know she committed the crime?

If you say my name, I will no longer exist. What am I?

I have an apple tree , number of apple in this tree get doubles every week.

On 30th week , the tree gets completely filled with apples :-)



Can you tell me , on what week does my tree is half covered with apples ?