For the following explain whether or not you think that logos is being used effectively 'Cigarette smoke contains over 4,800 chemicals, 69 of which are known to cause cancer, so why start smoking?

Yes, logos is being used effectively in this statement. The statistic about the number of chemicals in cigarette smoke and the specific number known to cause cancer appeal to reason and logic. This information serves to support the argument against starting smoking by highlighting the harmful effects of cigarettes.

Dumb it down

This statement is effectively using facts to show that smoking is really bad for you.