perplexus.info :: Numbers : Cube Difference Deduction II

Cube Difference Deduction II (Posted on 2022-10-22)

Consider these nine positive integers:
987654321, 98765432, 9876543, 987654, 98765, 9876, 987, 98 and 9

Determine how many of these are expressible as the difference of cubes of two integers.

See The Solution Submitted by K Sengupta

Rating: 5.0000 (1 votes)

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re: soln

| Comment 2 of 3 |

(In reply to soln by Steven Lord)

The problem asks for "difference of cubes of two integers", which would include negative integers and would give at least one more solution.

Therefore, I would suggest considering negative integers also in your methodology.

Posted by K Sengupta on 2022-10-22 23:18:19

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