Question

If the mean of the numbers 2,5,x, 4 and 6 is 5, then find x. ​

Answer 1

Answer:

8+4+6+x+2+7

=5

⇒x+27=30

⇒x=3.

Answer 2

Answer:

Let's first understand what mean term is in mathematics. In simple way mean is an average of given dataset or sample of numbers.

How to find mean?

Mean = Sum of all values / Toal number of values

Come back to your problem and will try to solve using above formula.

Here, mean is 5

And toal number of values are 6 (i.e. 2, 4, 6, 8, x and y)

So, 5 = ( 2 + 4 + 6 + 8 + x + y ) / 6

Thus, 2 + 4 + 6 + 8 + x + y = 30

Thus, x + y = 30 - ( 2 + 4 + 6 + 8 )

Thus, x + y = 30 - 20

Therefore, x + y = 10

Oh we found it! Enjoy :)