Question

If the H.M. of 4, x and 6 be 6, the value of x is​

Answer 1

Answer:

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

Answer 2

Use formula
X=2ab/a+b
= 2*4*6/10=4.8