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College math practice test MCQ: 6ι/8ι with options 23743, 65, 56 and ¹⁄56 for online mock tests, competitive exams questions and answers after reading theory and textbooks. Free study guide is for online learning introduction permutations, combinations and probability quiz questions with MCQs to practice test questions with answers.

MCQ: 6ι/8ι

1. 23743
2. 65
3. 56
4. ¹⁄56

D

MCQ: Factorial of a positive integer n is nι =

1. n(n-1)(n-2)(n-3)…3.2.1
2. (n-1)(n-2)(n-3)…3.2.1
3. (n-1)n(n-1)(n-2)(n-3)…3.2.1
4. (n-2)(n-3)…3.2.1

A

MCQ: 1/20.19.18.17 =

1. 20ι/16ι
2. 16ι/20ι
3. 1/16ι
4. 20ι

B

MCQ: For a negative integer n, factorial nι

1. is unique
2. is 0
3. does not exist
4. is 1

C

MCQ: 1/12.11.10 =

1. 1/12ι
2. 9ι/12ι
3. 12ι/9ι
4. 12ι

B