Final answer:
The number of different president-vice president pairings is 120.
Step-by-step explanation:
To calculate the number of different president-vice president pairings, we need to multiply the number of candidates for president by the number of candidates for vice president. In this case, there are 8 candidates for president and 15 candidates for vice president.
So the number of different pairings is 8 x 15 = 120.