Question

If the mean of 2,4,6,8,x is 5, then value of x will be

a. 2

b. 3

c. 5

d. 4​

Answer 1

mean = sum of all numbers / total numbers

5 = 2+4+6+8+x/5

5=x+20/5

5×5=x+20

x+20=25

x= 25 - 20

X = 5

HERE IS YOUR ANSWER.....

Answer 2

Given ---

Observation: 2, 4, 6, 8, x

Number of Observations = 5

Mean of the observation = 5

$mean \: = \frac{sum \: of \: total \: observation}{number \: of \: the \: observation} \\ = > 5 = \frac{2 + 4 + 6 + 8 + x}{5} \\ = > 25 = 20 + x \\ = > 25 - 20 = x \\ = > x = 5 \: \: ans$

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