If you pile oranges in a pyramid with 1 orange in the first layer, 4 in the second layer, 9 in the third layer , and 16 in the fourth layer.
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1, 4, 9, 16, 25, 36, 49, 64, 81, and 100 for the number of oranges from the first to the 10th layer. You can get the answer by adding all of the numbers: 181 + 113 + 61 + 25 + 5 = 294 + 86 + 5 = 385.
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1, 4, 9, 16, 25, 36, 49, 64, 81, and 100 for the number of oranges from the first to the 10th layer. You can get the answer by adding all of the numbers: 181 + 113 + 61 + 25 + 5 = 294 + 86 + 5 = 385
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