# Complementary Combination Quiz Questions and Answers 124 PDF Book Download

Complementary combination quiz, complementary combination MCQs answers, college math quiz 124 to learn math courses online. Permutations, combinations and probability quiz questions and answers, complementary combination multiple choice questions (MCQs) to practice math MCQs with answers for online colleges and universities courses. Learn complementary combination MCQs, double angle identities, composition of functions, fourth root of unity, complementary combination test prep for online certifications.

Practice complementary combination test with multiple choice question (MCQs): value of ^{n-1}c_{r} + ^{n-1}c_{r-1} is, with choices ^{n+1}c_{r}, ^{n-1}c_{r}, ^{n}c_{r-1}, and ^{n+1}c_{r+1} for online college degrees. Practice permutations, combinations and probability questions and answers for scholarships exams' problem-solving, assessment test.

## Quiz on Complementary Combination Worksheet 124Quiz Book Download

Complementary Combination Quiz

MCQ: Value of ^{n-1}C_{r} + ^{n-1}C_{r-1} is

^{n+1}C_{r}^{n-1}C_{r}^{n}C_{r-1}^{n+1}C_{r+1}

B

Fourth Root of Unity Quiz

MCQ: One root of equation x² + 1 = 0 is ι other is

- −ι
- ι²
- −1
- None of Above

B

Composition of functions Quiz

MCQ: If ƒ(x) = √(cot^{-1}x and g(x) = lnx,then (fog)(x) =

- ln(cot
^{-1}x) - 1/2 ln(cot
^{-1}x) - cot
^{-1}(lnx) - √(cot
^{-1}(lnx)

D

Double Angle Identities Quiz

MCQ: Cos2α =

- cos²α - sin²α
- 2sin²α +1
- 2sin²α -1
- 2cos²α +1

A

Online Math Learning Quiz

MCQ: Cos7θ-cosθ =

- 2sin4θsin3θ
- −2sin4θsinθ
- −2sin4θcosθ
- 2sin4θcosθ

B