Question

show that 121 is the sum of 11 odd natural numbers. ​

Answer 1

121 = 1+3+5+7+9+11+13+15+17+19+21

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Answer 2

Answer:

As 121 = 11^2

We know that the sum of first n odd natural numbers is n^2.

Therefore, given that,

121 = sum of first 11 odd natural numbers.

so,

121 = 1 + 3 + 5+ 7 + 9 + 11 +13 + 15 + 17 + 19 + 21 = 11^2

this is your full answer.

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