Roundoff Riddle

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.




Similar Riddles

There were five men at church, and it started raining while they were outside. The four that ran still got wet, but the one that was still stayed completely dry. Why did he stay dry?

Asked by Neha on 19 Jun 2025


Why did Navjot Singh Sidhu put the new January calendar in the freezer

Asked by Neha on 01 Dec 2024

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

Asked by Neha on 01 May 2025


What begins with T, ends with T, and has T in it?

Asked by Neha on 15 Oct 2021

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

Asked by Neha on 14 May 2021

I am dry when I go inside, but wet when I am pulled outside.
The longer I am inside, the stronger I get
When I am completely out, I am wet and I literally sag
Who am I?

Asked by Neha on 11 Feb 2026


A quarter is one-fourth of a dollar but Mr. John has changed the equation as below :

DOLLAR * 4 = QUARTER

Can you replace each letter with a digit to make the above solution correct?

Asked by Neha on 15 Mar 2026

What question can you never answer yes to?

Asked by Neha on 09 May 2022

Six people park their car in an underground parking of a store. The store has six floors in all. Each one of them goes to a different floor. Simon stays in the lift for the longest. Sia gets out before Peter but after Tracy. The first one to get out is Harold. Debra leaves after Tracy who gets out on the third floor.

Can you find out who leaves the lift on which floor?

Asked by Neha on 24 Dec 2024


Bay of Bengal is in which state?

Bay of Bengal

Asked by Neha on 12 Mar 2021

Hot Articles

Amazing Facts

Gambling

In Canada, a mathematical puzzle must be solved in order to win the lottery to classify it as a “game of skill” not gambling.