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

The doctor prescribed you to take one pill from the bottle every half an hour. The bottle is now left with only three pills.

How long do you think you have before you run out of pills?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?

Can you place six matchsticks in a manner that each of the matchsticks is in touch with the other five matchsticks?

Can you find out which triangle will have a bigger area among the following?
1. A triangle with sides 300, 400 and 500
2. A triangle with sides 300, 400 and 700

Can you make a fire with just a single stick?

How can you make number one disappear by adding something to it?

In a town, there are over 100 flats.
Flat-1 is named first flat.
Flat-2 is named second flat.
Flat-3 is named third flat.

A visitors 'Victor' decides to walk through all the flats, he finds all the flats except flat-62.
Victor later founds that the local of the town have given it another name.

What is the name of the Flat?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?