Question

SECTION -A (very short answers)
1. What is the sum of first n-odd natural numbers ?
Find the number of​

Answer 1

Answer:

Step-by-step explanation:he sequence of first n odd numbers is

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

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

S=  

2

n

​  

{2a+(n−1)d}

⇒S=  

2

n

​  

{2(1)+(n−1)2}

⇒S=  

2

n

​  

(2n)

⇒S=n  

2

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Answer 2

Answer:

I think for this question the answer is 2

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