A) \[\{1,\,\,0\}\]
B) \[\{1,\,\,-1,\,\,\,0\}\]
C) \[\{\,0,\,\,-1\}\]
D) \[\{1,\,\,-1\}\]
Correct Answer: B
Solution :
Given, \[n(A\times A)=9\,\,\,\,\,\,\,\Rightarrow \,\,\,\,\,n(A)\times n(A)=9\] which is possible when, \[n(A)=3.\] i.e., set A contain only three elements i.e., \[A=\{1,-1,0\}\] So, \[A\times A\] contain \[(-1,0)\] and \[(0,\,1)\]You need to login to perform this action.
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