You are mixing a mixture of cement and Sand with five gallons of water. You have a garden hose giving you all the water you need. The problem is that you only have a four-gallon bucket and a seven-gallon bucket and neither has graduation marks. Find a method to measure five gallons.

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

Once while in his court, King Akbar asked Birbal to write something on a wall that makes one sad when read in good times and makes one happy when read in sad times.

He took only a few moment and wrote something that fit the requirements. What did he write?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

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?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

What goes up but never comes down?

Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!