Q.
Let A be the set of all 3 x 3 matrices all of whoseentries are either O or 1. The number of elements is set A, is
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a
23
b
26
c
18
d
29
answer is D.
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Detailed Solution
There are 9 elements in a 3 x 3 matrix and each ~I can take two values. So, total number of matrices having 0 and 1 as their elements is 29
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