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?

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

He loves to dance, twist and prance, he shakes his tail, and as a way he sails, wingless he flies into the sky. What is he?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

There was a greenhouse.
Inside the greenhouse, there is a white house.
Inside the white house, there is a red house.
Inside the red house, there are lots of babies.

What is It?

Find the last number in the series below:

voN luJ yaM raM ---

Which is heavier: a ton of bricks or a ton of feathers?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

I don't get anymore wetter, no matter how much rain falls on me.

What kind of band never plays music?