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The number of all possible matrices of order $2\times 2$ with each entry 0 & 1.\[(A)\;27 \quad(B)\;18\quad(C)\;81\quad(D)\;16\]
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Apr 4, 2013
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There are 4 entries in a $2\times 2$ matrix.Each placed with 0 or 1.
4 places can be filled in $2^4=16$
Part (D) is the right answer.
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Apr 4, 2013
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sreemathi.v
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