Xiang is a teacher who bought a $2350 laptop for school use. The laptop is an allowable
1 answer:
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Answer:
There were 70 choices for the four locations to apply the new ointment
Step-by-step explanation:
The order in which the locations are chosen is not important. So we use the combinations formula to solve this question.
Combinations formula:
is the number of different combinations of x objects from a set of n elements, given by the following formula.
How many different choices were there for the four locations to apply the new ointment
Four locations from a set of 8. So
There were 70 choices for the four locations to apply the new ointment
Answer:
Step-by-step explanation:
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