It belongs to you, but other people use it more than you do. What is it?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

Take one out and scratch my head, I am now black but once was red. What am I?

A family is trapped in a jungle. There is a bridge which can lead them to safety. But at one time, the bridge can only allow two people to pass through. Also, all of them are afraid of the dark and thus, they can't go alone.

Father takes 1 minute to cross, the mother takes 2 minutes, the son takes 4 and the daughter takes 5 minutes. While crossing the time taken will be according to the slower one. How can they all reach the other side in the minimum possible time?

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?

What can go through glass without breaking it?

Jessica is telling her friends this story and asks them to guess if it’s the truth or a lie: “There was a man sitting in a house at night that had no lights on at all. There was no lamp, no candle, and no other source of light. Yet, he sat in the house and read his book happily.” Her friends say she’s lying, but Jessica corrects them and says she’s telling the truth. Jessica’s story is true—but how?