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

Which is faster, Heat or Cold ? Explain.

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

Can you count the number of squares in the given picture?

How can you drop a raw egg from a height onto a concrete floor without cracking it?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

You need to remove two matchsticks to make the below equation true. Can you do it ?

Two guards were guarding the camp.Guard-1 was looking towards the south to make sure no threat is coming from the road.Guard-2 was looking at the north to make sure no threat is coming from the top. Suddenly Guard-1 ask the Guard-2 why he is smiling?How Guard-1 knows that Guard-2 is smiling?

Can you replace the question mark with the correct letter?

6 + 6 + 6 = N
7 + 7 + 7 = E
8 + 8 + 8 = R
0 + 0 + 0 = ?

Jack and Joseph are well-known golf rivals. One Day during a match, they were level at a score of 30. Jack hit a bad shot and Joseph added 10 to his score. Joseph then hit an awesome shot and he won the game.

How ?