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For items # 2 - 3.
Problem: In how many possible ways can a runner get the first second, third place if there
are 12 runners join the race?
2. What is the value of n and r?
A. n = 3, r = 12
B. n = 12, r = 3
D. n = 4, r =12
C. n = 12, r = 4
3. What type of permutation or combination is the above problem?
A. Circular Permutation
B. Permutation of n taken all at a time
C. Permutation of n taken r at a time
D. Combination of n taken r at a time
E​


Sagot :

Answer:

2. D

3.A

Step-by-step explanation:

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