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in Mathematics by (31.5k points)

Write the number of all possible matrices of order 2 x 2 with each entry 1, 2 or 3.

1 Answer

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Best answer

Number of elements of 2 x 2 matrix = 4

Number of 1, 2 or 3 to write 1, 2 or 3 at 4 places

= 34

= 81

81 matrices of order 2 x 2 are possible with each entry 1, 2 or 3.

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