Question

WHAT IS THE SUM OF FIRST N ODD NUMBERS

Answer 1

Answer:

The sequence of first n odd numbers is

1,3,5,7.........n

This forms an A.P with a=1 and d=2

S= n/2{2a+(n−1)d}

⇒S= n/2 {2(1)+(n−1)2}

⇒S=n/2 (2n)

⇒S=n²

Step-by-step explanation:

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Answer 2

Answer:

The sequence of first n odd numbers is

1,3,5,7...n

This forms an A.P with a=1 and d=2

S=2n{2a+(n−1)d}⇒S=2n{2(1)+(n−1)2}⇒S=2n(2n)⇒S=n2