1.

Let Q be the set of all rational number in [0, 1] and f:[0, 1]rarr[0, 1] be defined by f(x)={{:(x," for ", x in Q),(1-x," for ", x cancel(in)Q):} Then the set S={x in [0, 1] (fof)(x)=x} is equal to

Answer»

Q
`[0, 1]-Q`
`(0, 1)`
[0, 1]

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