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Donald plays with his wood cubes and decides to make a pyramid
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Donald plays with his wood cubes and decides to make a pyramid

Donald plays with his wood cubes and decides to make a pyramid-example-1
User Brandonbanks
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1 Answer

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P3 = 10
10 + 5 = 15 = P4
15 + 6 = 21 = P5
21 + 7 = 28 = P6
28 + 8 = 36 = P7
36 + 9 = 45 = P8
45 + 10 = 55 = P9
55 + 11 = 66 = P10
User Noren
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