Answer:
a. A consumer testing service is commissioned to rank the top 5 brands of dishwasher detergent. Nine brands are to be included in the study. In how many different ways can the consumer testing service arrive at the ranking?
b. A group of 12 people is traveling in three vehicles. If 4 people ride in each vehicle, in how many different ways can the people be assigned to the vehicles?
Answer:
Buddy you kinda need something to show the surface area of? or do you want the equation to find surface area? for a cube it's A=6a²
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