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2014-11-11T14:17:11+02:00
3x4x5=3x5x4=4x3x5=3x5x4
2x6x8=2x8x6=6x8x2=2x8x6

2014-11-11T14:27:18+02:00
A) 3x4x5=3x5x4=4x3x5=3x5x4; b) 2x6x8=2x8x6=6x8x2=8x2x6;