Which of the following sets are equal?X={1,-1}, Y={-1,1}, Z={x : x is – McqOptions

MCQOPTIONS

1.	Which of the following sets are equal?X={1,-1}, Y={-1,1}, Z={x : x is root of x2-1=0 and x is an integer}
A.	X and Y
B.	Y and Z
C.	X and Z
D.	X, Y and Z
Answer» E.

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