June 2007 - Sec 1 - Game 4 - Q23

Video Transcript:

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Moving on to the final question of the June 2007 logic games section. Question
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23 which tells us if center 1 is the only recycling center that recycles wood
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then which one of the following could be a complete and accurate list of the kinds
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of material at one of the recycling centers
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recycles. Alright so let's draw out a quick hypothetical here. Again we know at least
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two in each. Center 1 is the only center recycling wood. So what we know
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now, again we know plastic can't be in 2 but now we know wood can't be in 2
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wood also cant be in 3 which tells us that we're in this scenario where
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center 2 has two materials and center one has three materials because again
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wood cannot be in center 2 and if center 2 had three materials center 1 and 2 would
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have to match. So whatever we place in center 2 in going to join center 1. We also know
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that if you have wood you have to have newsprint. So newsprint must be in center 1
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and since we know that the remaining two in center 1 are coming from center 2
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newsprint must also be present in center 2. Now you should notice that plastic
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cannot be in center 1 because if plastic was in center 1 that would fill up our
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three spots with materials
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but we can't have plastic or wood appear in 2 so there's no way everything that appears
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in 2 would be appearing in 1 because we would have tin and tin would not be present. So plastic cannot be in
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center 1 which means plastic must be in center 3. Again we know plastic can't
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be with glass and we have to have a glass present which pushes glass into
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2 and into 1. Who's left? Well, T hasn't been placed so tin must be in
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center 3. Again now we're looking for which of the following could be complete
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and accurate list of the kinds of materials
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that one of the recycling center recycles. So you should notice that
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every answer choice only has two materials so we're only going be considering 2 and 3 since
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we know center 1 has three materials. So turning our attention to (A) plastic and
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tin and you notice center 3 we see plastic and tin. So (A) here would be
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the correct answer. It could be a complete and accurate list of center 3 so (A) would
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be correct. But again just making sure notice newsprint and wood never a
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possibility. The only place we see newsprint and wood is in center one where we
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also have glass. Again just based on the fact that wood is president we know
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wood doesn't show up anywhere but center 1 and center 1 has three
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materials. So (B) and (D)
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can be eliminated based on that. Newsprint and tin again never possible. And lastly
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glass and tin again never possible. Proving again that (A) here would be the correct answer.
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And that brings us to the end of our discussion of the June 2007 LSAT games.