Math, asked by kubrabanu, 11 months ago

Find the mean of first 20 odd numbers Please step by step sum no spam

Answers

Answered by vamshi6982

mean =400

$x = 400$

mean of first n odd number =n^2

n=20

So,mean=20(20)

mean of first 20 odd numbers =400

Answered by BANGTANSQUAD

Hey mate here is your answer

The mean of first 20 odd numbers

sum of all the observations

Mean=___________________________

Number of observations

1+3+5+7+9+11+13+15+17+19+21+23+25+27+29+31+33+35+37+39

________________________________________

400

_____

=20

Therefore the mean of first 20 odd numbers is 20...

vamshi6982: i won't bother about the marks

vamshi6982: I just wanna study the concept

vamshi6982: but if u do in such a way u may waste a lot of time for a single solitary question

kubrabanu: No its very simple method

kubrabanu: but here in exams we want marks no not extraordinary knowledge

kubrabanu: no but thats not correct formula

vamshi6982: ok

vamshi6982: but these are all 1mark question s

kubrabanu: no we get 2 marks for this

kubrabanu: i am 8th standard so our teacher will give us for 2 marks

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