Question

the mean of first n natural number is..​

Answer 1

Answer:

We know that sum of first n natural numbers is 2n(n+1) So mean of the first n natural numbers =numbersumofnnaturalnumbers=n2n(n+1)=2(n+1)

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Answer 2

Answer:

Let's understand the meaning of Mean or Average………………….

A single number that represents a group of numbers can be taken as a mean or average of that group.

Mean can be calculated by dividing sum of numbers (observations) by numbers of observations.

For example if your class has 3 students and they scored 60%, 70%, 80% marks.

Average marks that your class has scored is :

Mean =(60 + 70 + 80)/3

=70%

Now comes to exact your question If you want to calculate mean of first n numbers:

mean= (1 + 2 +3 +4 +5+……………+ n )/n

mean=n *(n+1)/2*n

mean=(n+1)/2

I hope it will help you.

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