Question

if the mean of 4, x, 6, 9,9,y and 13 is 18 then​

Answer 1

Answer:

Answer

As we know,

x

=

n

x

1

+x

2

+....+x

n

here

x

=18

n=5

So, 18=

5

16+14+x+23+20

∴90=73+x

∴x=90−73

x=17