PROBLEMS

$2.$ All inventors are people who see new patterns in familiar things, so all inventors are eccentrics, because all eccentrics are people who see new patterns in familiar things.

$3.$ Some snakes are not dangerous animals, but all snakes are reptiles, therefore some dangerous animals are not reptiles.

$4.$ Some foods that contain iron are toxic substances, for all fish containing mercury are foods that contain iron, and all fish containing mercury are toxic substances.

$5.$ All opponents of basic economic and political changes are outspoken critics of the liberal leaders of Congress, and all right$-$wing extremists are opponents of basic economic and political changes. It follows that all outspoken critics of the liberal leaders of Congress are right$-$wing extremists.

$6.$ No writers of lewd and sensational articles are honest and decent citizens, but some journalists are not writers of lewd and sensational articles; consequently, some journalists are honest and decent citizens.

$7.$ All supporters of popular government are democrats, so all supporters of popular government are opponents of the Republican Party, inasmuch as all Democrats are opponents of the Republican Party.

$8.$ No coal$-$tar derivatives are nourishing foods, because all artificial dyes are coal$-$tar derivatives, and no artificial dyes are nourishing foods.

$9.$ No coal$-$tar derivatives are nourishing foods, because no coal$-$tar derivatives are natural grain products, and all natural grain products are nourishing foods.

$10.$ All people who live in London are people who drink tea, and all people who drink tea are people who like it$.$ We may conclude, then, that all people who live in London are people who like it$.$