Question

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

Answer 1

4 numbers, mean of 5.

4x5= 20. so the total of all 4 numbers is 20.

2+4+6= 12

so in order for the total to be 20, the missing number has

to be 8 (20-12=8)