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There are natural numbers. Answer the fo...

There are natural numbers. Answer the following questions considering first natural numbers.
Mean of first n natural number is -

A

`(n+1)/(2)`

B

`(2^(n)+1)/(2^(n))`

C

`(n+1)/(n-1)`

D

`(n-1)/(2)`

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • Mean of first n natural numbers is

    A
    `(n(n-1))/2`
    B
    `(n(n+1))/2`
    C
    `((n+1))/(2n`
    D
    `((n+1))/(2`

  • There are natural numbers. Answer the following questions considering first natural numbers. Variance of first n natural numbers is -

    A
    `(n^(2)-1)/(6)`
    B
    `(n^(2)+1)/(12)`
    C
    `(n^(2)+1)/(12)`
    D
    `(n^(2)+1)/(6)`

  • There are natural numbers. Answer the following questions considering first natural numbers. Mean of square of first n natural numbers is -

    A
    `((n+1)(2n+1))/(6)`
    B
    `(n+1)/(12)`
    C
    `(n-1)/(12)`
    D
    `((n-1)(2n-1))/(6)`

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