I came across a question in a textbook Chemistry Live by Declan Kennedy:
Draw the structural formula for the compound 1,3,5-trimethylhex-3-ene.
My issue is with the 1-methyl part. Isn't this compound just the same as 2,4-dimethylhept-3-ene?
I don't think it is a typo as it appears again in an updated version of the same book.