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If X is a matrix of order 3 3, Y is a matrix of order 2 3 and Z is a matrix of order 3 2 , then which of the following are correct? 1. (Z Y) X is a square matrix having 9 entries. 2. Y(X Z) is a square matrix having 4 entries. 3. X(Y Z) is not defined. Select the correct answer using the code given below :

Options

  1. A1 and 2 only
  2. B2 and 3 only
  3. C1 and 3 only
  4. D1,2 and 3

Correct answer

D. 1,2 and 3

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