Question

Express 81 as the sum of 9 odd numbers.​

Answer 1

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

Answer 2

Answer:

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Step-by-step explanation:

Given,

81 can be written as 9^2

According to the property of perfect square, for any natural number n, we have sum of first n odd natural numbers = n^2

Expressing 81 as a sum of 9 odd numbers, we get

81 = (9)^2

Here, n = 9

By applying the law, 81 = (1+3+5+7+9+11+13+15+17)

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