Question

The sum of first 9 odd numbers is

Answer 1

Answer:

81

Step-by-step explanation:

1+3+5+7+11+13+17+19+23

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Answer 2

Answer:

81

Step-by-step explanation:

we can find sum of first n odd natural no. by using formula n×n

eg . sum of first 9 odd number is = 9×9

=81

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