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RELATIONS AND FUNCTIONS — MATHS STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceMATHSRELATIONS AND FUNCTIONS1 Mark
Question
The identity element for the binary operation × defined on Q - {0} as $\text{a}\times\text{b}=\frac{\text{ab}}{2}\ \forall$ a, b $\epsilon$ Q - {0} is:
  1. 1
  2. 0
  3. 2
  4. None of these.
✓

Answer

  1. 2

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