List all permutations of 12345 using 3 symbols at a time. I\'m having a hard tim

Question

List all permutations of 12345 using 3 symbols at a time.
I'm having a hard time understanding the question. Specifically "using 3 symbols at a time" part.
Also how long you think the list will be. Teacher said 60 (5*4*3) But I think it would be 120 .. List all permutations of 12345 using 3 symbols at a time.
I'm having a hard time understanding the question. Specifically "using 3 symbols at a time" part.
Also how long you think the list will be. Teacher said 60 (5*4*3) But I think it would be 120 ..
I'm having a hard time understanding the question. Specifically "using 3 symbols at a time" part.
Also how long you think the list will be. Teacher said 60 (5*4*3) But I think it would be 120 ..

Explanation / Answer

Total symbols = 5

All permutation = 5P3 = 5! / (5-3)! = 5!/2! = 5*4*3 = 60 (ans)

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