How many methyl groups are present in 2,5-dim | vedclass

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(D) The structure of $2,5-$dimethyl$-4-$ethylheptane is $CH_3-CH(CH_3)-CH_2-CH(CH_2CH_3)-CH(CH_3)-CH_2-CH_3$. Counting the methyl groups $(-CH_3)$: $1

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$5$

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(D) The structure of $2,5-$dimethyl$-4-$ethylheptane is $CH_3-CH(CH_3)-CH_2-CH(CH_2CH_3)-CH(CH_3)-CH_2-CH_3$. Counting the methyl groups $(-CH_3)$: $1$. One at the start of the heptane chain $(C-1)$. $2$. One methyl substituent at $C-2$. $3$. One methyl substituent at $C-5$. $4$. The ethyl group at $C-4$ contains one methyl group $(-CH_2-CH_3)$. $5$. One methyl group at the end of the heptane chain $(C-7)$. Totaling $5$ methyl groups.

How many methyl groups are present in $2,5-$dimethyl$-4-$ethylheptane?

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