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- Which chimps are tested on which days, and in which time slot (morning or afternoon)?

- Which chimps are tested before and after which other chimps?

- Which chimps are tested on the same day?

- Which time slots are free?

The Initial Setup

In a sequence game with a calendar aspect, a days-of-the-week visualisation may come in handy, as it does in everyday life when we need to keep track of a week’s events:

1) Put an “A” in the Thursday morning slot.

3) Put an “X” in the Monday morning slot to indicate that that time slot is free.

7) Jot down that Carlo is tested either Tuesday morning or afternoon.

(Note: See “The Big Picture” below to see why I recommend handling the rules in this order.)

2) You can jot down the info on the three late risers, but there’s no way-yet-to narrow down their placement further.

4) This helps clarify Elmo’s place in the ordering. Combined with the previous rule, we know that Elmo has to be tested in the afternoon of Wednesday, Thursday, or Friday.

5) Alonzo is tested on Thursday morning, which means that according to this rule, Wednesday afternoon must be free.

6) Dingo, Alonzo, and Frank must be tested in that order, from earliest to latest. Since Alonzo is tested on Thursday morning, Dingo must be tested Monday, Tuesday, or

Key Deduction

Elmo has to be tested in the afternoon, but not on Monday or Tuesday, and we now know that Wednesday afternoon is off limits. So Elmo must be tested on either Thursday or Friday afternoon, the same as Frank, which we deduced by combining rules 1, 2, and 6. So: Elmo and Frank must be tested on Thursday and Friday afternoon, in either order. The other heavy sleeper, Bobo, therefore will be tested on Monday or Tuesday afternoon. No chimp is left for Friday morning, so this time slot must be free.

The Big Picture

- You don’t have to take the rules in order. Seek out and incorporate the most concrete rules first, in order to build a solid foundation.

- Always turn negative information around to the positive. For example, in rule 4, it’s easy to figure out (and more useful to know) when Elmo can be tested than when he can’t be.

- Always search for the implications of rules. Think rule 5 through and then build it into your

visualisation of the game.

- Don’t be intimidated by games that contain many rules. The more the merrier. That’s because, in general, the more information you’re given to work with, the more structured the game is and the more restricted the entities are.

The Questions

7. (B) With Bobo, Carlo, and Dingo before Alonzo, and Elmo and Frank after, Alonzo must be fourth, so (B) is correct.

(A) Bobo could go on Tuesday. (C) Carlo could be third, after Bobo and Dingo. (D) Alonzo could be tested immediately before Elmo, leaving Frank for Friday. (E) If Carlo and Dingo are tested on Tuesday and Wednesday morning, respectively, then there would only be two free morning time slots.

Remember:

- The first question can solidify your conception of a game. Answering this one helps to reinforce, and show the value of, all the work we did up front.

8. (A) We deduced that Bobo must be tested on Tuesday or Wednesday afternoon, and Dingo must be tested Monday, Tuesday, or Wednesday There’s room for only one chimp on Monday and Wednesday, so Tuesday is the only common day open to both. But testing both Bobo and Dingo on Tuesday would violate rule 7, as this would leave Carlo hanging. So Bobo and Dingo are the chimps that can’t be tested on the same day, which is choice (A).

Days that the pairs in the wrong choices can be tested: (B) Tuesday; (C) Tuesday; (D) Thursday; (E)Thursday.

Remember:

- Logic Game answers are objectively correct, so once you find an answer that works, even if it’s (A) or (B), have the confidence to choose it and move on. This saves valuable time on a time intensive section.

9. (C) If Dingo goes on Tuesday morning, then Carlo must go on Tuesday afternoon (rule 7), leaving unfortunate Bobo in the first open slot, Monday afternoon (remember, the key deduction limits Bobo’s choices to Monday or Tuesday afternoon). Bobo on Monday is (C).

Elmo and Frank are unaffected, so as we deduced, either could be on Thursday or Friday, killing choices (A) and (B). With Bobo, Carlo, and Dingo placed, Wednesday morning must be free, resulting in three free time slots in the morning and only one in the afternoon, eliminating (D) and (E) as well.

Remember:

- When a question stem includes a hypothetical, you can sometimes save time by scanning the choices for the entities that are the most affected by the if-clause. In this case, Dingo’s actions directly impinge upon the placement of Bobo and Carlo, and scanning the choices for either of these chimps brings us quickly to choice (C).

10. (E) The key deduction mandates that Frank’s choice of days is limited to Thursday and Friday, while Bobo must take either Monday or Tuesday. The only way to satisfy the condition in the question stem is if Frank takes Thursday afternoon and Bobo

The question stem seeks something that could be false. Dingo is the only chimp not precisely slotted in: she can be tested on Monday afternoon or Wednesday morning. Therefore, choice (E) could be true, but need not be; she could be tested Wednesday morning, which would place her third behind Carlo and Bobo. The other choices conform perfectly to the arrangement outlined above.

Remember:

- Play out the chain of deductions as far as you can before moving on to the question. The more info you’re armed with, the greater the chance the answer will be a breeze to locate.

- In a “can be false” question, focus on the entities that are the least restricted. In this case, the exact time slot of every chimp but Dingo is determined, which virtually guarantees that Dingo will be part of the answer.

11. (D) If Dingo is tested in the afternoon, that must happen on either Monday or Tuesday afternoon. If Dingo’s on Monday afternoon, Bobo must be Tuesday afternoon, and Carlo Tuesday morning. Elmo can be tested Thursday and Frank on Friday, or vice versa. So there are two schedules possible if Dingo goes on Monday. However, if Dingo is tested on Tuesday, then Bobo must be tested Monday afternoon, Carlo still goes on Tuesday morning, and Elmo and Frank can still float between Thursday and Friday. This adds another two possibilities to the mix, resulting in a grand total of four, choice (D).

Remember:

- When asked for the number of possible arrangements, start with a key entity-in this case, Dingo and determine the number of possibilities for it. Then build as many arrangements around each of these possibilities as you can.

12. (B) Start with the second piece of information. Elmo’s time slots are limited to Thursday or Friday afternoon, so if Elmo is tested on the same day as another chimp, it must be on Thursday, the same day as Alonzo. This puts Frank in the Friday afternoon spot. Now for the other hypothetical: “At least one chimp is to be tested each day.” The only chimp available for Wednesday morning is Dingo. Carlo can be tested only on Tuesday (in this case, morning or afternoon), leaving Bobo as the chimp to represent Monday (in the afternoon, of course). Breezing through the choices, (B) looks correct, with Elmo on Thursday and Dingo on Wednesday. (A) need not be true. Carlo could be tested on Tuesday afternoon, in which case the time slot immediately preceding would be Tuesday morning, and we know Bobo’s on Monday. However, Carlo could be tested Tuesday morning, in which case (C) bites the dust. (D) and (E) are both out-and-out false; Carlo on Tuesday comes between Bobo and Dingo, and two chimps, Dingo and Alonzo are tested between Carlo and Elmo.

Remember:

- When a question stem contains more than one hypothetical, focus on the one that seems to be more concrete first.