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Q.
Total number of possible matrices of order $3 \times 3$ with each entry 2 or 0 is
Matrices
Solution:
The number of places in a $3 \times 3$ matrix is 9 .
Also, each place has two choices i.e., either 2 or 0.
$\therefore$ The number of possible matrices of order $3 \times 3$ with each entry 2 or 0 is $2^9$ i.e., 512 .