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I have a stack of boxes 4 at the bottom, 3, then two and 1 on top leve. Place a number in each box so that each number above the bottom row is the sum of the two numbers in the boxes imediately underneath. Find the largest number of odd numbers possible.

 Feb 18, 2019
 #1
avatar+4434 
+4

Looks like 

 

OOEO and OEOO

 

both give 7 odds in the triangle

 

 Feb 19, 2019

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