SOLUTION: what is the sum of the first 45 consecutive odd numbers

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Question 865370: what is the sum of the first 45 consecutive odd numbers
Answer by richwmiller(17219) About Me  (Show Source):
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S = ½(2a + (n-1)d)n
S = ½(2 *1 + (44)2)45
S = ½(2 + (88)45
S = ½(90)45
S=45*45=2025