Posted by Riah on Tuesday, February 22, 2011 at 1:18am.
Assuming a jar of (10cm)³.
Then a crude estimate is to line them up in all three directions:
(10/2)*(10/1.5)*(10/1.5)
=5*6.7*6.7
=225
Note that I have used a fractional number of beans because we don't really line them up perfectly. They will be crossed. Also, the space between two layers could be better used by placing a jellybean in the depression between two beans of the lower layer. This can be automatically done by shaking the jar after it's been filled.
See what others give, hopefully a more refined estimate.
222.2222222222222
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