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Study bachelors and masters degree courses, online mathematics degree programs MCQs: * is said to be commutative in a for all a,b ε a with options a + b = b + a, a * b = b * a, a - b = b - a and a * b ≠ b * a for online preparation of college courses for qualifying in jobs for college students. Free skills assessment test is for online learn binary operation quiz questions with MCQs, exam preparation questions and answers.

MCQ: * is said to be commutative in A for all a,b ε A

1. a + b = b + a
2. a * b = b * a
3. a - b = b - a
4. a * b ≠ b * a

B

MCQ: Extraction of a square root of a given number is

1. binary operation
2. relation
3. unary operation
4. relation in some set

C

MCQ: Which of following is unary operation?

2. multiplication
3. square root
4. None of Above

C

MCQ: Identity element of a set X with respect to intersection in P(X) is

1. X
2. π
3. does not exist
4. 0

A

MCQ: If * is a binary operation in A then

1. A is closed under *
2. A is not closed under *
3. A is not closed under +
4. A is closed under -

A