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Let f be an injective map. with domain (...

Let f be an injective map. with domain (x, y, z and range (1, 2, 3), such that exactly one following statements is correct and the remaining are false : `f(x)=1 , f(y) != 1, f(z) !=2` The value of `f^-1(1)` is

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The correct Answer is:
`f^(-1) (1)=y`
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