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

I know a 5-digit number having a property that With a 1 after it, it is three times as large as it would be with a one before it.

Guess the number?

Asked by Neha on 06 Apr 2025


I can be cracked, made, told, and played. What am I?

Asked by Neha on 16 Aug 2025

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

Asked by Neha on 08 Jun 2023


What work can one never finish?

Asked by Neha on 12 Jan 2024

You Throw The Outside, Cook The Inside
Eat The Outside, Throw The Inside.

What Is It?

Asked by Neha on 27 Jun 2023

The below given figure comprises of a pattern through which you can determine the missing letter. Can you push your mind to find the pattern and add the missing letter?

Replace the (?)

Asked by Neha on 30 Jun 2023


How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

Asked by Neha on 21 Apr 2022

Can you find out the total number of triangles in the given figure?

Triangle Angle

Asked by Neha on 12 Mar 2024

John is looking at Jenifer, but Jenifer is looking at Jacob. John is married, but Jacob is not.

Is a married person looking at an unmarried person ?

Asked by Neha on 08 Feb 2021


On a beautiful Sunday morning, You ordered a hot tea to your hotel room and suddenly you remember an important thing that needed to be done right now will take around 3 minutes to complete.
Like most people you like your tea to be hot while drinking so, when should you pour cream in the tea?
1. straight away
2. Just people, you drink the team
3. Its does not matter

Asked by Neha on 24 Jun 2023

Hot Articles

Amazing Facts

Rubik’s Cube

The inventor of the Rubik’s Cube didn’t realize he’d built a puzzle until he scrambled it the first time and tried to restore it.