The set of all rational numbers between 2, 3 is:

• an empty set A
• an infinite set B
• a finite set C
• a power set D

• 
  A
• 
  B
• 
  C
• 
  D

• integer A
• rationalnumber B
• irrationalnumber C
• naturalnumber D

i² + 1 =

• -1 A
• 0 B
• i C
• 1 D

Conjugate of -3 -2 i is:

• 3 + 2i A
• -3 + 2i B
• 2 + 3i C
• -2 + 3i D

• Additive property A
• Multiplicativeproperty B
• Reflexiveproperty C
• Transitive property D

• cancellation property w.r.t multiplication A
• cancellationproperty w.r.t addition B
• multiplicativeproperty C
• additiveproperty D

The real part of the complex number a + bi is:

• b A
• -b B
• a C
• -a D

The ordered pairs (2, 5) and (5, 2) are:

• not equal A
• equal B
• disjoint C
• empty D

• additive property A
• multiplicative inverseproperty B
• transitive property C
• negative property D

• integer A
• rational number B
• irrational number C
• natural number D

Zero is:

• a natural number A
• a whole number B
• a positive integer C
• a negativeinteger D

Irrational numbers are:

• terminating decimals A
• non-terminating decimals B
• non-terminating, repeating decimals C
• non-terminating, non repeating D

• 
  A
• 
  B
• 
  C
• 
  D

• 0 A
• i B
• -i C
• 1 D

π, e are:

• integers A
• natural numbers B
• rationalnumbers C
• irrationalnumbers D

The set of negative integers is closed with respect to:

• addition A
• multiplication B
• both (a) and (b) C
• subtraction D

Factors of x² + y² are:

• (x + iy) (x - iy) A
• (x + y) (x - y) B
• (x + y) (x + y) C
• none D

If z₁ = 4i and z₂ = 3 - 9i, then z₁ + z₂ =

• 3 - 5i A
• 3i - 5 B
• 7 - 9i C
• 3 + 5i D

π is defined as:

• ration of diameter of a circle to its circumference A
• ration of the circumference of a circle to its diameter B
• ration of area of a circle to its circumference C
• ration of the circumference of a circle to its area D