# Complementary Combination Quiz Questions and Answers 124 PDF Download

Complementary combination quiz questions, learn online college math test prep 124 for distance learning online college courses. College and university courses MCQs on permutations, combinations and probability quiz, complementary combination multiple choice questions and answers to practice math MCQs with answers. Learn complementary combination MCQs, career aptitude test on online math learning, double angle identities, composition of functions, fourth root of unity, complementary combination practice test for online fun mathematics courses distance learning.

Practice complementary combination career test with multiple choice question (MCQs): value of ^{n-1}c_{r} + ^{n-1}c_{r-1} is, for online college courses in mathematics degree with options ^{n+1}c_{r}, ^{n-1}c_{r}, ^{n}c_{r-1}, ^{n+1}c_{r+1} for online associates degree. Learn permutations, combinations and probability questions and answers with problem-solving skills assessment test.

## Quiz on Complementary Combination Worksheet 124Quiz PDF 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