Question

10, 18, 4, 15,3,21, x

if x is the median of the 7 numbers listed above which of the following could be the value of x?

Answer 1

You have to orginize them from smallest to largest, 'x' is the median so I put it in the middle:
3, 4, 10, x,15, 18, 21

That means 11-14 could be x.