Question

find the mean of the following

Answer 1

$<b > Heya$
Here is the answer

We know that ,

$mean = \frac{sum \: of \: all \: numbers}{total \: numbers}$

According to the question,

We have to find the mean of given numbers.

Let's find it now,

$mean = \frac{ \frac{1}{2} + \frac{1}{3} + \frac{1}{5} + \frac{1}{6} }{4}$

Now,Find the LCM of the numerator,

$mean = \frac{ \frac{1 \times 15}{2 \times 15} + \frac{1 \times 10}{3 \times 10} + \frac{1 \times 6}{5 \times 6} + \frac{1 \times 5}{6 \times 5} }{4}$

$mean = \frac{ \frac{15}{30} + \frac{10}{30} + \frac{6}{30} + \frac{5}{30} }{4}$

$mean = \frac{ \frac{15 + 10 + 6 + 5}{30} }{4}$

$mean = \frac{ \frac{36}{30} }{4}$

$mean \: = \frac{36}{30} \times \frac{4}{1}$

$mean = \frac{36}{30} \times \frac{1}{4}$

$mean = \frac{9}{30}$

$mean = \frac{3}{10}$

Hence , the mean of the given numbers Is
3/10.