Question

What is the sum of first 21 odd number

Answer 1

Answer:

Step-by-step explanation:

Use this method n square and you will get the answer .

N means how many odd numbers and just square this you will get the answer.

In here

N=21

N square is equal to 21 square

21×21= 441

Hope it help you

Answer 2

Answer:

here's your answer

Step-by-step explanation:

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hope it helps to you