Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not-rounded numerals equals 24.

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

The following sentence is false. The preceding sentence is true.
Are these two sentences true or false?

What is black when you buy it, red when you use it, and gray when you throw it away?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

A man died, leaving $10,000,000 for his widow, 5 sons and 4 daughters. Each daughter received an equal amount, each son received twice as much as a daughter, and the widow received three times as much as a son.

How much did the widow receive?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

John can eat 27 chocolates in an hour, Jacob can eat 2 chocolates in 10 minutes, and Jolly can eat 7 chocolates in 20 minutes. How long will it take them to share and eat a box of 120 chocolates whilst playing Chess?

What Deficiency does the below rebus represent?

VIT_MIN