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Number Pyramids
Number pyramids can be made using the given rule.

5 7
23 43
221
2 story pyramid
3 story pyramid

EExxpplloorree The following is the way to make a number pyramid.

11 6 24
24 13
113

EExxeerrcciissee Use the rule given in the example to complete each pyramid.

Example 6 8
2 5
9
36 12

Numbers 75
   73   74   75   76   77   78   79   80   81   82   83