Find the 8 in the below-given Image.

What is the word or phrase?

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

No one wants to have it, but if one got it, he does not want to lose it. What is It?

Can you find out the number that should replace the question mark with a valid reason?

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

A woman is sitting in her hotel room and hears a knock at the door. She opens the door to see a man whom she’s never met before. He says, “I’m sorry, I have made a mistake, I thought this was my room.” He then goes down the corridor and into the elevator. The woman goes back into her room and calls security. What made the woman so suspicious of the man?

What's a single-digit number with no value?

Can you count the number of blocks in the picture below?

Can you discover the missing number in this series?

37, 10, 82
29, 11, 47
96, 15, 87
42, ?, 15