Please do with the step, the all sub part of the question is about permutations and combinations with reference to the options provided. .. Thank you A. At a certain time from city A to city B is served by 4 buses, and from city B to city C is served by 3 different buses from the first four buses, one person goes from city A to city C through town B, and return to town A in the same way, if when he returns home he doesn't If you want to use the same bus, the number of ways to go home is: A. 18 B. 24 C. 36 D. 48 E. Other B. Given five numbers, namely 1, 2
Please do with the step, the all sub part of the question is about permutations and combinations with reference to the options provided. .. Thank you
A. At a certain time from city A to city B is served by 4 buses, and from city B to city C is served by
3 different buses from the first four buses, one person goes from city A to city C
through town B, and return to town A in the same way, if when he returns home he doesn't
If you want to use the same bus, the number of ways to go home is:
A. 18 B. 24 C. 36 D. 48 E. Other
B. Given five numbers, namely 1, 2, 3, 4, and 5 the number of different whole numbers consisting of
of the three digits of these numbers is
A. 25 B. 30 C. 60 D. 125 E. 150
C. If (n+1) P 3 = n P 4, then the value of n is....
A. 2 B. 3 C. 4 D. 5 E. 6
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