Practice number system multiple choice questions (MCQs), math test 1 for online exams. Practice complex numbers MCQs questions and answers on complex numbers, operation on three sets, groups in maths, rational numbers and irrational numbers, linear and quadratic function with answers. Free number system quiz, online study guide has helping answer key with choices as ι, 1, 2 ι and 2 of multiple choice questions as if z1 = 2 + ι, z2 = 1 + 3ι, then ι re ( z1 - z2 ) = to test learning skills for viva exam preparation and job's interview questions. Study to learn complex numbers quiz questions with online learning MCQs for competitive exam preparation test.

MCQ. If z1 = 2 + ι, z2 = 1 + 3ι, then ι Re ( z1 - z2 ) =

1. 1
2. ι
3. 2 ι
4. 2

B

MCQ. (A ∪ B) ∪ C =

1. A ∩ (B ∪ C )
2. A ∪ (B ∪ C )
3. π
4. A ∪ (B ∪ C )

D

MCQ. { - 3 n : n ε Z } IS an abelian group under

1. subtraction
2. division
3. multiplication

D

MCQ. Every even integer is also

1. Natural number
2. Irrational number
3. Rational number
4. Whole number

C

MCQ. The function f = { (x,Y) | Y = mx + c } is