At a historical site, cannonballs are stacked
in a rectangular pyramid. The top layer of
the p...
Mathematics, 11.11.2020 03:50 nnamdi
At a historical site, cannonballs are stacked
in a rectangular pyramid. The top layer of
the pyramid has only 3 cannonballs arranged
in one row. The 2nd layer has a 2-by-4
arrangement. If this pattern continues, how
many cannonballs are in the 9th layer?
Answers: 1
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