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प्रश्न
What is the total number of 2 × 2 matrices with each entry 0 or 1?
योग
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उत्तर
In a
\[2 \times 2\] matrix, the total number of elements are 4 and each entry can be written in 2 ways.
Number of ways in which 4 entries can be written =
\[4^2 = 16\] [Applying the above property]
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