Which one of the following, if substituted for the condition that Lewis and Ota do not lecture on the same day as eac...
ankita96August 8, 2020
Ans choice D
Hi, i read your explanation in the previous thread. I used the same logic, then why is D wrong. J and k have to be together but j and m must also be on separate days right?
Thanks in advance!
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I would also like to know why E would be wrong too
SkylarAugust 9, 2020
@ankita96, happy to help!
We are looking to replace the existing rule that L and O cannot go on the same day (Rule #3).
(A) "J and K must go on the same day" is correct. When this is the case, we have M and N on one day (Rule #2) and J and K on the other. This leaves only one remaining spot open on each day, one for L and one for O. Therefore, L and O will never be on the same day as each other.
(D) "J and M cannot go on the same day" is incorrect. All we know from this is that M and N go on one day (Rule #2) and J is on the other. We are never told that J and K must go together here. It would still be possible to have L and O together in the following scenario, so (D) is not an accurate rule replacement: 1: J M 2: L N 3: O K T F
(E) "K and N cannot go on the same day" is incorrect. Similar to (D), all we know from this is that M and N go on one day (Rule #2) and K is on the other. It would still be possible to have L and O together in the following scenario, so (E) is not an accurate rule replacement: 1: J L 2: M O 3: N K T F
Does that make sense? Hope it helps! Please let us know if you have any other questions.
ankita96August 10, 2020
oh right! I pictured it wrong. Thank you, this was really helpful.
