Problem 2819. Find the 9's Complement
By solving this problem, you will make progress in the following group(s)
Magic Numbers
- 19 Problems
- 84 Finishers
Number theory
- 44 Problems
- 21 Finishers
Find the 9's complement of the given number.
An example of how this works is shown here.
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Problem Comments
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1 Comment
Olaoluwa Rotimi Popoola
on 24 May 2017
How do they always get a solution of size 10?
Solution Comments
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Magic Numbers
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