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Consecutive Triangles (Posted on 2009-11-29) Difficulty: 4 of 5
A, B, C and D are triangular numbers.

A, B and C are always consecutive while D is their sum.

Determine (and explain as best as possible1) how such sets of values are distributed across the number system.

1. This can be explained in terms of a single variable expression.

See The Solution Submitted by brianjn    
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  Subject Author Date
re: computer-aided solutionbrianjn2009-12-02 04:17:44
re(3): an observationbrianjn2009-11-30 19:20:52
re(2): an observationCharlie2009-11-30 11:35:10
re: an observationbrianjn2009-11-30 08:13:20
an observationDej Mar2009-11-30 04:40:05
Solutioncomputer-aided solutionCharlie2009-11-29 19:04:46
re: a 6.4 second questionbrianjn2009-11-29 18:12:09
Solutiona 6.4 second questionAdy TZIDON2009-11-29 16:20:14
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