perplexus.info :: Numbers : What's Going On?

What's Going On? (Posted on 2005-07-05)

How do you explain the following addition problems?

      87678          185634
    + 43125        +  86257
    -------        --------
    1821784           62872

See The Solution Submitted by Bractals

Rating: 3.0000 (3 votes)

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Puzzle Solution

Comment 5 of 5 |

Each of the numbers in the problem text are Base- Minus 9 or, base -9 integers instead of decimal (or, base 10) integers.

Accordingly, converting each of the said numbers in base 10, we have:

47816 -9743

+ 24125 AND + 48238

--------------- ---------------

71941 38495

Posted by K Sengupta on 2022-03-02 21:09:21

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