The number of all possible matrices of order 2 × 2 with each entry 0 or 1 is:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 16
A 2 × 2 matrix has 4 entries, and each entry can be filled in 2 ways (0 or 1). By the multiplication principle,
\(\text{number of matrices} = 2 \times 2 \times 2 \times 2 = 2^4 = 16\)