perplexus.info :: General : A pyramid of balls

A pyramid of balls (Posted on 2002-08-02)

Consider a triangular pyramid of balls, constructed by placing each ball (except those on the bottom) in the hollow formed by the three balls under it. If such a pyramid has 12 balls on the side of the bottom level, how many balls in total does it contain?

See The Solution Submitted by levik

Rating: 2.8333 (6 votes)

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Puzzle Thoughts

Comment 6 of 6 |

It contains 364 balls.

Posted by K Sengupta on 2023-05-22 00:15:47

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