A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

You are playing as white and given four rooks to checkmate the black king in four moves with the following rules 1. You can place one rook every move and ensure the black king should be in check position.2. After four moves the black king should be in the checkmate position.

Different lights make me strange by changing me into different sizes. What am I?

What can you deduce from the following BrainBat?

CRY
LMKI

Find the last number in the series below:

voN luJ yaM raM ---

I have two coins.
* One of the coins is a faulty coin having a tail on both sides of it.
* The other coin is a perfect coin (heads on side and tail on other).

I blindfold myself and pick a coin and put the coin on the table. The face of the coin towards the sky is the tail.

What is the probability that another side is also tail?

A man is found dead with a knife in his back When the investigation is done. A chair lays beside him and the forensic team finds moisture around the body.

If he committed suicide, how did he do it?

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?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.