College Math Certification Exam Tests

College Math Practice Test 121

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The Quiz: *Subset of A x B is called a;* "Basic Function" App Download (Free) with answers: Relation from B to A; Relation from A to B; Relation in A; Relation in B; for online college for teaching degree. Learn Sets, Functions and Groups Questions and Answers, Apple eBook to download free sample to study online classes courses.

*Subset of A x B is called a*

- relation from A to B
- Relation from B to A
- Relation in A
- relation in B

a

*If ω is the cube root of unity, then cube roots of 125 are*

- 3, 3ω, 3ω²
- −3, -3ω, -3ω²
- −5, -5ω, -5ω²
- 5, 5ω, 5ω²

d

^{n}C_{4} =

- n(n-1)(n-2)(n-3)/4ι
- (n-1)(n-2)(n-3)/4ι
- (n-2)(n-3)/4ι
- None of Above

a

*The quadratic equation with roots 3-√( 3 and 3+√(3 is*

- x² + 4x + 1 = 0
- x² - 4x + 1 = 0
- x² - 6x + 6 = 0
- x² - 6x - 6 = 0

c

*A right angle is the angle of measure*

- 90″
- 90′
- 60°
- 90°

d

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