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. (ZY)X is a square matrix having 9 entries.
2. Y(XZ) is a square matrix having 4 entries.
3. X(YZ) is not defined.
Select the correct answer using the code given below :
1
1 and 2 only
2
2 and 3 only
3
1 and 3 only
4
1, 2 and 3