Buy me, smell me or deliver me, I do not change.

Who am I?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

John gave half of the apples he had plus one more to Jacob. He gave half of the remaining ones plus one more to James. Now, John was left with just one apple.

Can you find out how many did he have in the beginning?

If six children and two dogs were under an umbrella, how come none of them got wet?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

Find the Goldfish below the given Image.

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

If 2 workers can complete painting 2 walls in exactly 2 hours.

How many workers would be needed to paint 18 walls in 6 hours?

I inserted a coin in a bottle and closed its mouth with the help of a cork. Now, I was able to take the coin out from the bottle without taking out the cork or breaking the bottle. Can you tell me how I did it?

10 people came into a hotel with 9 rooms and each guest wanted his own room. The bellboy solved this problem.
He asked the tenth guest to wait for a little with the first guest in room number 1. So in the first room, there were two people. The bellboy took the third guest to room number 2, the fourth to number 3, ..., and the ninth guest to room number 8. Then he returned to room number 1 and took the tenth guest to room number 9, still vacant.
How can everybody have his own room?