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?

Three ants are sitting at the three corners of an equilateral triangle. Each ant starts randomly picks a direction and starts to move along the edge of the triangle. What is the probability that none of the ants collide?

Why is it against the law for a man living in Delhi to be buried in Mumbai?

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

What you cannot hold but it is yours?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

Pronounced as 1 letter, And written with 3, 2 letters there are, and 2 only in me. I’m double, I’m single, I’m black blue and grey, I’m read from both ends, and the same either way. What am I?

The husband and wife were jogging in the morning. To match every two steps of the husband, the wife required three steps. If Both of them start with the here right foot. After how many steps do their left foot be together?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

You need to arrange three 7 and mathematical symbols to form number 1?