Questions
Let A be the set of all 3 x 3 matrices all of whose
entries are either O or 1. The number of elements is set A, is
a
b
c
18
d
detailed solution
Correct option is D
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
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