John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.

How can the John reach the main gate?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

A man dies of old age on his 25 birthday. How is this possible?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

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

Our product and our sum always give the same answer. Who are we?

You have two buckets - one holds exactly 5 gallons and the other 3 gallons. How can you measure 4 gallons of water into the 5 gallon bucket?

(Assume you have an unlimited supply of water and that there are no measurement markings of any kind on the buckets.)

Identify the 10 differences between the two given pictures.

Kareena is older than Katrina and younger than Karishma. Isabelle is younger than Bipasha and Karishma. Bipasha is older than Karishma. If Kareena and Isabelle are the same age, who's the youngest?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?