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NTA Abhyas JEE Main2020MathematicsSets and RelationsPractice

If A is the set of even natural numbers less than 8 and B is the set of prime numbers less than 7 , then the number of relations from A to B are

Options

  1. A2 9
  2. B9 2
  3. C3 2
  4. D2 9 - 1

Correct answer

A. 2 9

Step-by-step solution

A = 2,4 , 6 ; B = 2 , 3 , 5 ∴ A × B contains 3 × 3 = 9 elements. Hence, the number of relations from A to B = 2 9 .

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