Give the IUPAC name of

1.	Give the IUPAC name of
Answer» 3-ethyl-4, 4-dimethylhetane 4-ethyl-5, 5-dimethyldecane 5-ethyl-4, 4-dimethyloctane 3-ethyl-4, 4-dimethylnonane Solution :`UNDERSET("4-ethyl-5, 5-dimethyldecane")(H_(3)C-CH_(2)-CH_(2)-CH_(2)-CH_(2)-underset(underset(CH_(3))(\|))overset(overset(CH_(3))(\|))(C )- underset(underset(CH_(2)-CH_(3))(\|))(CH)-CH_(2)-CH_(2)-CH_(3))`

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