Question

The mean of 8 numbers is 4,6,4,7,(x),(x+1),8 and 2 is 5. Find x​

Answer 1

X=2.5

Explanation:

4+6+4+7+X+(X+1)+8+2/8=5

31+X+(X+1)/8=5

40=31+X+(X+1)

9=X^2+X

X=2.5