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RELATIONS AND FUNCTIONS — Maths STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceMathsRELATIONS AND FUNCTIONS1 Mark
Question
Choose the correct answer from the given four options.
If the set A contains 5 elements and the set B contains 6 elements, then the number of one-one and onto mappings from A to B is:
  1. 720
  2. 120
  3. 0
  4. none of these.
✓

Answer

  1. 0

Solution:

Since, the number of elements in B is more than A.

Hence, there cannot be any one-one and onto mapping from A to B.

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