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MAD 2104 – ONLINE – Spring 2017 Quiz 10 This quiz covers material from Module 2 Lesson A1

1. Consider the two lists: (1,2,3,4) and (4,3,2,1) Which of the followings is true? (A) (1,2,3,4) = (4,3,2,1) (B) (1,2,3,4) 6= (4,3,2,1)

2. Consider the two lists: (0,0,0,0) and (0,0,0) Which of the followings is true? (A) (0,0,0,0) = (0,0,0) (B) (0,0,0,0) 6= (0,0,0) 3

. Consider the list: (a,(a,b)) Which of the followings is true? (A) It is a list of length 2. (B) It is a list of length 3.

4. How many 3 letters passwords can we create by using the letters A, B, C if repetition is allowed? (A) 27 (B) 6

5. How many 3 letters passwords can we create by using the letters A, B, C if repetition NOT is allowed? (A) 27 (B) 6

6. Evaluate 7! (A) 49 (B) 42 (C) 823543 (D) 5040

7. Evaluate 1001!/999! (A) 1001000 (B) 1000100 (C) 999999 (D) None of the above 1

8. Consider making a lists from the symbols 0, 1, 2, 3, 4. How many length-5 lists are there if repetiotion is not allowed and the first 2 entries must be odd? (A) 120 (B) 48 (C) 24 (D) 12

9. How many non-repetitive lists of length 4 can be created from 7 distinct symbols? (A) 5040 (B) 28 (C) 840 (D) 42

10. How many non-repetitive lists of length 3 can be created from 10 distinct symbols? (A) 604800 (B) 720 (C) 5040 (D) 30

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