1. Permutation and Combination review answers

2. Permutations, Combinations, and Binomial Expansion
MULTIPLE CHOICE:
­ Calculators are not allowed for this part of the test.
­ Each question is worth one mark.
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If all the following letters S L E U F I D F are used, how many 8 letter
arrangements are possible?
a. 7! b. 7! 2! c. 8! 2! d. 8!
2! 2!

15. 14.
In the binomial expansion of (3x + 2)8, the last term is:
a. 3 . 28 b. 28 c. 2 d. 20

16. 15.
If there are 3 identical red books and 4 identical green books on a shelf, how many
arrangements are possible keeping all the red books together?
a. 5! b. 7! c. 5! d. 3!4!
3!4! 4!

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20. SHORT ANSWER:
­ Calculators are not allowed for this part of the test.
­ Each question is worth one mark.
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36. LONG ANSWER:
­ Calculators are not allowed for this part of the test.
­ Marks are indicated for each question.
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39. LONG ANSWER:
­ Calculators are allowed for this part of the test.
­ Marks are indicated for each question.
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