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COMEDK2014MathematicsSets and Relations

Which of the following is an empty set?

Options

  1. Ax x . is a real number and .x²-1=0
  2. Bx x . is a real number and .x²+3=0
  3. Cx x . is a real number and .x²-9=0
  4. Dx x . is a real number and .x²=x+2

Correct answer

B. x x . is a real number and .x²+3=0

Step-by-step solution

In option (b), x²+3=0 array ll & x= -3 C & x is not a real number. & It is an empty set. array

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