- 23 Jan '07 14:26

Three pens with three pigs each, one large pen surrounding the other pens. The small pens hold three pigs - an odd number - and the large pen holds nine pigs - an odd number - and three pens.*Originally posted by Mathurine***You have 9 pigs.**

Build 4 pens to house the pigs.

Every pen must hold an odd number of pigs.

All pens must be used, and all pigs accommodated.

How?

Richard - 30 Jan '07 14:19

Alternatively, you can build normal pens and have two pigs in three of the pens and three in the fourth. Two is an odd number, because it's the only even prime.*Originally posted by Shallow Blue***Three pens with three pigs each, one large pen surrounding the other pens. The small pens hold three pigs - an odd number - and the large pen holds nine pigs - an odd number - and three pens.**

Richard - 01 Feb '07 04:18 / 4 editsYou can actualy make 4 perfect square pens and Place them in a PLUS shape so one side from each pen makes 4 sides for a new one.

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kinda like that (of course the corners would touch). so the 4 pens in that position make a new one in the middle.

put 1 pig on left 1 pig in middle and 1 pig in right.

3 in top and 3 in bottom.