Math, asked by kubrabanu, 1 year ago

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

Answers

Answered by vamshi6982
1

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
2

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

________________________________________

20

400

_____

20

=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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