Can someone explain the setup for "most" "some" questions? Forum

[dbt]

I am trying to teach someone it, and I forget. I used Powerscore, but don't have the books anymore.

[msblaw89]

I am trying to teach someone it, and I forget. I used Powerscore, but don't have the books anymore.

Most is greater than or equal to 51%, including 100%. Some means at least one up to 100%

[dbt]

Most automobile companies are foreign companies, even though very few foreign companies are automobile companies. It follows that some companies that have domestic production plants are foreign companies.

Which one of the following, if assumed, enables the argument's conclusion to be properly drawn?

(A) Most companies that have domestic production plants are automobile companies.

(B) Some automobile companies are not foreign companies.

(C) Most automobile companies have domestic production plants.

(D) Many foreign companies are automobile companies.

(E) Many automobile companies have domestic production plants.

[msblaw89]

Most automobile companies are foreign companies, even though very few foreign companies are automobile companies. It follows that some companies that have domestic production plants are foreign companies.

Which one of the following, if assumed, enables the argument's conclusion to be properly drawn?

(A) Most companies that have domestic production plants are automobile companies.

(B) Some automobile companies are not foreign companies.

(C) Most automobile companies have domestic production plants.

(D) Many foreign companies are automobile companies.

(E) Many automobile companies have domestic production plants.

The answer is C . The evidence says Greater than 50% of AutoComp are Foreign Comp. The conclusion says that at least one company with a domestic plant is foreign. Whats new in the conclusion that doesn't appear in the evidence? Domestic plants...so we need to have that in our answer... You can eliminate B, D. Somehow you need to show that at least one AutoComp with domestic production is a foreign company. So we need an answer that says more than 50% of Auto companies are foreign AND more than 50% of auto companies are domestic... therefore the overlap would ensure you have at least one AutoComp with domestic plants that is foreign.

[dbt]

Thank you!

[msblaw89]

Thank you!

Think if most A's are B's, and most A's are C's, then there are SOME B's that are C's because of the overlap