What is next number in the pattern below:

131 517 192 123 ?

Move four matchsticks to the below square to form three squares?

Replace the question mark with the correct number.

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

Which is faster, Heat or Cold ? Explain.

What kind of band never plays music?

what does the below rebus means?

A boy was at a carnival and went to a booth where a man said to the boy, "If I write your exact weight on this piece of paper then you have to give me $50, but if I cannot, I will pay you $50." The boy looked around and saw no scale so he agrees, thinking no matter what the carny writes he'll just say he weighs more or less. In the end the boy ended up paying the man $50. How did the man win the bet?

Out of four images which one is the odd one out?