What can be the general notation of a matrix with 4 rows and 5 columns?

5x4

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4x5

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4x4

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5x5

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Solution

The correct option is B 4x5
The general notation of a matrix with m rows and n columns is m × n .
So, the general notation of a matrix with 4 rows and 5 columns is 4 x 5.

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Identify the correct statements:

(i) A matrix with 3 columns and 2 rows is of order $3 \times 2$ .
(ii) A matrix with 5 columns and 8 rows is of order $8 \times 5$
(iii) If the order of a matrix is $4 \times 3$ , then it has 12 elements.
(iv) If the order of a matrix is $5 \times 3$ , then it has 10 elements.