A man lives on the fifteenth floor of an apartment building. Every morning he takes the elevator down to the lobby and leaves the building. In the evening, he gets into the elevator, and, if there is someone else in the elevator, or if it was raining that day, he goes back to his floor directly. Otherwise, he goes to the tenth floor and walks up five flights of stairs to his apartment. Can you explain why he does this?

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

Find the value of "?" in the ball picture Riddle below:

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

Three people enter a room and have a green or blue hat placed on their heads. They cannot see their own hat but can see the other hats.
The colour of each hat is purely random. They could all be green, blue, or any combination of green and blue.
They need to guess their own hat colour by writing it on a piece of paper, or they can write 'pass'.
They cannot communicate with each other in any way once the game starts. But they can have a strategy meeting before the game.
If at least one of them guesses correctly they win $10,000 each, but if anyone guesses incorrectly they all get nothing.
What is the best strategy?

What has hands, but can’t clap?

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

This is a picture puzzle. You have to guess the name of the movie that can be related to the picture.

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?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?