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Write the sum of first n odd numbers

Posted by Vikash Kumar 5 years ago

CBSE > Class 11 > Mathematics

1 answers

Gaurav Seth 5 years ago

Natural odd no:s forms an A.P

1,3,5,7 ....

a = 1 , d = 2

Sn = n/2 [ 2a + [n-1]d ]

= n/2 [ 2 + 2n - 2 ]

= n/2 [ 2n ]

= n²

Sum of n natural odd no:s = n²

3Thank You

ANSWER

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CBSE > Class 11 > Mathematics