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The number in each brick of the 4-sided pyramid is the sum of the numbers in the two supporting bricks, working from the outside in or from the base to the apex of the pyramid. I’ve filled in a few bricks to get you started. Find the number that goes in the very center or top brick which is the sum of its four side bricks.

Note: Each number in the shaded bricks is the sum of the two adjoining bricks as shown by the direction of the arrows.




There are more than one way of doing these puzzles and may well be more than one answer.  Please let me and others know what alternatives you find by commenting below.  We also welcome general comments on the subject and any feedback you’d like to give.   If you have a question that need a response from me or you would like to contact me privately, please use the contact form.[/donotprint]

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If you’ve enjoyed doing the puzzles, consider ordering the book; 150+ of the best puzzles in a handy pocket sized format. [donotprint]Click here for full details.[/donotprint]

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