If G and K are in group 3, which one of the following must be true?
muhammad-shariefFebruary 25, 2019
Confusion?
If G and K must be in group 3 then does it not mean that T and H must be in group 1 since they cannot be in group 2? Moreover, if both T and H are in one then F and J would have to be in 2. In addition, Q/R/S can either be in 2 or 3 and Q/S can be in 1. I would suggest editing the video and adding these points, if possible. Thank you.
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Great points. You're right—T and H must be in 1, and F and J would have to be in 2. These are all additional things that must be true in this scenario. However, on questions like these, it's always best to check the answer choices after each additional thing is figured out.
With G and K in 3, we know that T can't be with G in 3, nor can it be in 2, so it must be in 1. Then upon checking our answers, we see that (E) says T must be in 1 which is true.
It's important to note that these questions simply ask to choose an answer that is something that must be true; this is different from them asking us to choose an answer that shows all of which must be true for the particular scenario.
The additional deductions you made are wonderful and it shows that you are understanding this game really well. However, for this particular question, the additional work to make those inferences is not necessary for arriving at the correct answer. It's good that you saw the extra inferences though because future questions you encounter may be more difficult and will require second or third level inferences, such as noting as you did that F and J must go in 2.
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