LSAT 84, Logic Game 4, Question 21, LSATHacks

LG Game 4 Question 21 Explanation, by LSATHacks

This question mentions S and V. You should think about what rules affect them. Rule 3 does: if V has 5, then S has both.

This question says that S and V do not have both (because they have different types of bonds). So, that means that V does not have 5. It therefore has 10, and S has 5:

Since H, L, S and V all have only one bond, that means both G and R will have both. (H and L only have 1 because of rule 1: H and L have different bonds).

This question asks which corporations can have only 10 years bonds. We know the answer must include V. Since only A has V, A is CORRECT.

Simple as that. You don’t need to fill in the rest of the diagram. That would be focussing on what could be true, which is usually a mistake. Instead, you should figure out what must be true, and then look for the answer.