Question

(i) Express 81 as the sum of 9 odd numbers.
(ii) Express 100 as the sum of 10 odd numbers.​

Answer 1

Step-by-step explanation:

9+9+9+9+9+9+9+9+9

9+9+9+9+9+9+9+9+9+19

Answer 2

Answer:

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Step-by-step explanation:

(i) 81 as the sum of first 9 consecutive odd numbers is 1+3+5+7+9+11+13+15+17.

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

(ii) 100 as the sum of first 10 consecutive odd numbers is 1+3+5+7+9+11+13+15+17+19.

1+3+5+7+9+11+13+15+17+19 = 100

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