How can you take 2 from 5 and leave 4?

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?

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

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?

What work can one never finish?

What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title

The cream is heavier than Milk. True or False?

A Child was born in Lahore, Pakistan.

Still child is not a Pakistani citizen.why ?

What can go through glass without breaking it?

Why is a river so rich ?