The answer is 12, 13 and 16
The probability you won't be a hobbit is 2/3, and the probability you won't use an umbrella is 4/5.
Answer: 2.833
Step-by-step explanation:
Add up the amount of light bulbs: (7+6+4).
Divide 17 (^the sum^) by 6 (the amount of 75 watt bulbs).