Binary Operation Multiple Choice Questions (MCQ) PDF - 144

MCQ 716: If a,b ε A, a * b ε A, then

1. * is a unary operation in A
2. a * b = b * a
3. * is a binary operation in A
4. a * b ≠ b * a

MCQ 717: A sequence of numbers whose reciprocals form an arithmetic sequence is called the

1. arithmetic sequence
2. geometric sequence
3. harmonic sequence
4. complex sequence

MCQ 718: A subset f of A x B is said to be a function from A to B if domain of f is A and first element of order pairs of f

1. do not repeat
2. do not exist
3. repeat
4. the members of B

MCQ 719: If α and β are the roots of x² -2x + 3 = 0, then the equation with roots α+2, β+2 is

1. x² - 6x + 11 = 0
2. x² + 6x - 11 = 0
3. x² -11x + 6 = 0
4. x² +11x - 6 = 0

MCQ 720: The roots of the quadratic equation ax² + bx + c = 0 are real and distinct if

1. b² - 4ac = 0
2. b² - 4ac > 0
3. b² - 4ac < 0
4. b² - 4ac≥ 0