Question 1 of 22

The figure below that net of a cube. The average of each pair of number on opposite faces is the same. What is the missing number represented by the fare marked “y”?

Question Image of The figure below that net of a cube. The average of each pair of number on opposite faces is the same. What is the missing number represented by the fare marked “y”? .
A
18
B
19
C
20
D
21
E
None of the above