Question

find the mean of first 8 natural number

Answer 1

36/8 = 4.5 Is the Arithmetic mean of 8 first naturalnumbers

Answer 2

Step-by-step explanation:

$Sum \: of \: first\: n \\ natural\: numbers =\frac{n(n+1)}{2}$

$Sum \: of \: first\: 8 \: natural\: numbers \\=\frac{8\times (8+1)}{2}\\=4\times 9\\=36$

$Mean =\frac{sum\:of \: first\:8\: natural\: numbers}{number\:of \: terms }\\=\frac{36}{8}\\=\frac{9}{2}\\=4.5$

Therefore,

$The\:mean \:of \: first\:8\\natural \:numbers = 4.5$

•••♪