which expression leaves you with the largest number on the number line?

A. (10^(8))/(10^(18))
b. (10^(15))/(10^(-3))
c. (10^(2))^(8)
d. 10^(5)*10^(-4)*10^(-5)

To determine which expression leaves you with the largest number on the number line, we can simplify each expression:

A. (10^(8))/(10^(18)) = 10^(8-18) = 10^(-10)
B. (10^(15))/(10^(-3)) = 10^(15+3) = 10^18
C. (10^(2))^(8) = 10^(2*8) = 10^16
D. 10^(5)*10^(-4)*10^(-5) = 10^(5-4-5) = 10^(-4)

Therefore, the expression that leaves you with the largest number on the number line is option B: (10^(15))/(10^(-3)) = 10^18.