Question 17
Three spinners are shown. Spinner A has the eight integers $1,2,3,4,-1,-2,-3,-4$; spinner B has the two operations $+$ and $-$; spinner C has the same eight integers as A. Viet spins A, then B, then C, and calculates the number from A, followed by the operation from B, followed by the number from C. For example, obtaining $4,-,2$ gives $4-2=2$. How many different ordered spinner outcomes give a positive integer?
