(20 + 12) - 8, since the question states n is EIGHT less than the sum of 20 and 12.
Answer:
464.1587734 = 464 793867/5000000
8 different choices
Step-by-step explanation:
With or without antibrake=2 ways
With or without player=2ways
With or without sunroof=2 ways
Total number of ways=2×2×2=8 ways