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?

What can you catch but never throw?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

The cream is heavier than Milk. True or False?

In a box, there is a jumble of 7 red balls, 6 blue balls, 5 green balls, and 4 yellow balls. What is the minimum number of balls, will you have to pick up so that you have at least 4 balls of the same colour?

Can you find out the total number of triangles in the given figure?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

The pound is not a finish.

We are sharing a few instructions below, which you have to use in any suitable order to modify the above sentence such that the end sentence is a scientific fact.

- Eliminate a letter and supplement another in its place.
- Take away one word.
- Remove one letter from one word.
- Get rid of two letters from one word.
- Swap a word with its antonym.