[" Q.10Let "f(x)=[[2+x,,x>=0],[4-x,,x<0]...

[" Q.10Let "f(x)=[[2+x,,x>=0],[4-x,,x<0]],[[" If "f(f(x))=k" has atteast one solution,then smallest value of "k" is "],[[" (A) "2," (B) "3," (C) "4," (D) "6]]]

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