Question

The avarage of first'10odd numbers also 10 do you agree with the statement justify answer

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Answer 1

Answer:

First 10 odd numbers-

1,3,5,7,9,11,13,15,17,19

The above series forms an A.P. with first term and common difference of 1 and 2.

As we know that sum of n terms in an A.P. is given as-

S  

n

​  

=  

2

n

​  

(a+l)

Whereas, a and l are first and last term.

Sum of first 10 odd numbers-

∴S  

10

​  

=  

2

10

​  

(1+19)

⇒S  

10

​  

=5×20=100

Now, average of first 10 odd numbers-

Av. =  

n

S  

n

​  

 

​  

 

=  

10

100

​  

=10

Thus the average of first 10 odd numbers is 10.

Hence I agree with  as the average of first 10 odd numbers is 10.

Explanation:

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