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Reported Question / Answer
Q.) If A = {x ? C: x2 = 1} and B = {x ? C: x4 = 1}, then A ? B is equal to
1)
{-1, 1, i, -i}
2)
{-1, 1}
3)
none of these
4)
{-i, i}
5)
NULL
Answer :
4
Thank you for reporting wrong Question / Answer / Options
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Message / Correct Answer / Suggestion
Human Verification : Answer 2 + 3 = ?
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