Answered: 15. How many combinations has a 3-digit…

Math

Advanced Math

15. How many combinations has a 3-digit lock? A. 27 B. 100 C. 300 D. 1000

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

15. How many combinations has a 3-digit lock? A. 27 B. 100 C. 300 D. 1000 16. There are six questions on Eric's essay test. He only needs to answer 2 of them, you can choose any 2 that he wants. How many different combinations of two 2 test questions can Eric answer. A. 15 B. 30 C. 360 D. 120 17. If there are 250 two ways to select five players from tennis team. How many max players can a team make. A. 10 B. 20 C. 100 D. 200

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