Rounding Off Numbers

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

John and Jenni are a married couple. They have two kids, one of them is a girl. Assume safely that the probability of each gender is 1/2.
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Hint: It is not 1/2 as you would first think.

Asked by Neha on 14 Jun 2024


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Can you find out how many did he have in the beginning?

Asked by Neha on 13 Nov 2024

A wife and her husband were driving in their car on the highway. All of a sudden, they ran out of gas. So the husband said to the wife, 'Now, you stay here. I will go down the highway to the nearest gas station, and it will be about 1 hour. Just listen to the radio and read some books, and remember to lock all the windows and doors. I will leave the keys with you.' So, off the husband went, and the wife first locked ALL the windows and doors. Next, she turned on the radio, and this is what she heard on the news report:
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Asked by Neha on 13 Jul 2023


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Asked by Neha on 24 Jun 2024

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Who is the most intelligent primate in the room?

Asked by Neha on 16 Sep 2023

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Why?

Asked by Neha on 17 May 2021


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Asked by Neha on 13 May 2023

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Asked by Neha on 20 Oct 2023

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What was the idea ?

Asked by Neha on 10 Apr 2023


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

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The phrase “thinking outside the box” was popularised from the solution to a topographical puzzle involving 9 dots in a box shape.