Without adding, find the sum of 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19
Answers 2
Step-by-step explanation:
In this series, by counting we can find that the total odd numbers are 12, i.e, n=12, So by equation (1) we can write, 1+3+5+7+9+11+13+15+17+19+21+23 = 122 = 12×12 =144.
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butterbuns
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100
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100,is it right .
Let me scoresome points........
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