What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

On rolling two dices (six-sided normal dice) together, what is the probability that the first one comes up with a 2 and the second one comes up with a 5?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different. How do you measure 45 minutes?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

John was born on March 5, 1970, in Delhi, India. Jacob was born 25 days before John. The year when they took birth, Republic Day fell on Monday.

Can you find out on what day was Jacob born?

Speaking of rivers, a man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?

Which letter of the alphabet has the most water?

A bag contains 64 balls of eight different colours. There are eight of each colour (including red). What is the least number you would have to pick, without looking, to be sure of selecting 3 red balls?

What have one eye but still cannot see?