Question

Express square of 9 as the sum of consecutive odd numbers.
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Answer 1

Answer:

(1+3+5+7+9+11+13+15+17) = sum of first 9 odd numbers =9²=81.

Answer 2

Answer:

1+3+5+7+9+11+13+15+17

Step-by-step explanation:

81=1+3+5+......(2n-1)

81=1+3+5+......(2*9-1)

81=1+3+5+7+9+11+13+15+17

hope this helps you