Problem 1413
Suppose the positive odd integers are grouped in the following way: {1}, {3,5}, {7,9,11}, {13,15,17, 19}, … What is the sum of the numbers in the 89th group?
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The first 10 to correctly answer this question are shown below.
- Steve Hnidei
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- Sherry Wolf
- Patrick Costello
- Peter Phipps
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- Khalil Dagher
- Mario Skrtic
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