I am quite hot but become too cold if you remove the first two letters. What am I?

Can you place six X (crosses) in below board without making three in a row in any way ?

There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

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

Can you solve the maths in the below-given picture equation?

Can you identify if it's a murder or a suicide ?

John and his team plan to rob a safe. They got just one chance to break the code else the local police will be informed. Below are clues:
A) Exactly one number is perfectly placed: 9 8 1
B) Everything is incorrect: 9 2 4
C) Two numbers are part of the code of the safe but are wrongly placed: 0 9 3
D) One number is part of the code of the safe but is wrongly placed: 1 4 7
E) One number is part of the code of the safe but is wrongly placed: 7 8 3

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

What type of tree can I carry in my hand?

What is the fastest way to double your money?