Assertion (A) : A and B are two 2 × 2 matrices then A × B can be zero matrix.

Reason (R) : When for matrices A and B, A × B is zero, then either matrix A is zero, or matrix B is zero or both A and B are zero.

1. A is true, R is false.

2. A is false, R is true.

3. Both A and R are true.

4. Both A and R are false.

Assertion (A) : A, B and C are three square matrices of order 2 × 2 such that AB = AC, it does not imply that B = C.

Reason (R) : Cancellation law is not applicable in matrix multiplication.

1. A is true, R is false.

2. A is false, R is true.

3. Both A and R are true.

4. Both A and R are false.

Assertion (A) : Product of 5^th term from beginning and 5^th term from end of the G.P. : 3 - 6 + 12 - 24 + ….. -384 is -1152.

Reason (R) : In G.P. product of n^th term from beginning and n^th term from end is 1^st term × last term.

1. A is true, R is false.

2. A is false, R is true.

3. Both A and R are true.

4. Both A and R are false.