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IUPAC name of following compound (P) is

1. 1,1-Dimethyl-3-ethylcyclohexane
2. 1-Ethyl-3,3-dimethylcyclohexane
3. 3-Ethyl-1,1-dimethylcyclohexane
4. 1-Ethyl-5,5-dimethylcyclohexane

Correct answer: 3-Ethyl-1,1-dimethylcyclohexane

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