4. How many ways can we select 5 class officers out of 45 students?* 2, 121, 189 1,221,759 1,222,750 2,122,179 5. How many outcomes can we get if we are going to select 3 numbers from 0 to 9, without repetition? * 321 720 24 145 6. How many outcomes can we get if we are going to select 3 numbers from 0 to 9, with repetition? * 1000 789

4. How many ways can we select 5 class officers out of 45 students?* 2, 121, 189 1,221,759 1,222,750 2,122,179 5. How many outcomes can we get if we are going to select 3 numbers from 0 to 9, without repetition? * 321 720 24 145 6. How many outcomes can we get if we are going to select 3 numbers from 0 to 9, with repetition? * 1000 789

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Question

4. How many ways can we select 5 class officers out of 45 students?*

2, 121, 189

1,221,759

1,222,750

2,122,179

5. How many outcomes can we get if we are going to select 3 numbers from 0 to 9, without repetition? *

321

720

145

6. How many outcomes can we get if we are going to select 3 numbers from 0 to 9, with repetition? *

1000

789

300

720

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