Teaching DSSSB PGT Mock Test 2025 Mathematics Matrices Operations on Matrices

The matrix A has x + 3 rows and x columns. The matrix B has 4 - y rows and y + 5 columns. Both AB and BA exist. What are the values of x and y respectively?

1

1 and 2

2

2 and 1

3

3 and 4

4

None of these

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