If the mean of the first n natural number is 15, then find n.​

Question

If the mean of the first n natural number is 15, then find n.​

in progress 0
Adalynn 3 weeks 2021-10-01T20:47:00+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-10-01T20:48:00+00:00

    Answer:

    HOPE IT HELPS….

    PLS MARK AS BRAINLIEST…IF HELPFUL

    0
    2021-10-01T20:48:05+00:00

    Step-by-step explanation:

    The first n natural numbers are:

    1, 2, 3, 4, ……….,n

    Now, Mean = (1 + 2 + 3 + 4 +……….+ n)/n

    => 15 = (1 + 2 + 3 + 4 +……….+ n)/n

    => 15 = {n(n + 1)/2}/n

    => 15 = (n + 1)/2

    => n + 1 = 15 * 2

    => n + 1 = 30

    => n = 30 – 1

    => n = 29

    So, the value of n is 29

Leave an answer

Browse
Browse

18:9+8+9*3-7:3-1*13 = ? ( )