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Squares and Triangles (Posted on 2005-01-18) Difficulty: 2 of 5
The following sequence gives a series of square numbers,

10% of 10=1,
20% 0f 20=4,
30% of 30=9,
40% of 40=16,........
90% 0f 90=81,
100% 0f 100=100,.....

Is it possible to create a similar series that gives us triangular numbers as the result?

No Solution Yet Submitted by Juggler    
Rating: 2.8000 (5 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Some Thoughts Conclusion Comment 8 of 8 |
(In reply to Investigation Of The Second Form by K Sengupta)

Summarizing, there are precisely 10 valid series satisfying the
conditions of the problem, ignoring the cases:(a,b) = (50n, n+1)
and (50(n+1), n)

  Posted by K Sengupta on 2007-06-28 11:23:27

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