How to prove that ?
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In a word: induction. In a thousand words: Code: 1 3 5 7 9 3 3 5 7 9 5 5 5 7 9 7 7 7 7 9 9 9 9 9 9
1 3 5 7 9 3 3 5 7 9 5 5 5 7 9 7 7 7 7 9 9 9 9 9 9
Hello, OReilly! Here's one way . . . How to prove that: ? This is an arithmetic series . . with first term , common difference , and terms Using the Sum formula: . . . .
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