Question

If the mean of the n natural number. is15 then find value of n

Answer 1

Step-by-step explanation:

let x = sum of the natural numbers

x÷ n = 15

x = 15 ÷n

x / 15 = n

Answer 2

Step-by-step explanation:

sum of first n natural number = n(n+1)/2

mean of first n natural number is n(n+1)/2n

= n+1/2=15

n+1 =30

n =29