The number of real roots of the equation \[\left| 2-\left| 1-\left| x \right| \right| \right|=1\] is

The number of real roots of the equation \[\left| 2-\left| 1-\left| x

1.	The number of real roots of the equation \[\left\| 2-\left\| 1-\left\| x \right\| \right\| \right\|=1\] is
A.	1
B.	3
C.	5
D.	6
Answer» D. 6

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The number of real roots of the equation \[\left| 2-\left| 1-\left| x \right| \right| \right|=1\] is

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