# June 2007 - Sec 1 - Game 4 - Q22

## Video Transcript:

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Alright moving on to question twenty two here.
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If center three recycles glass then which one of the following kinds of material
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must center 2 recycle?
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Taking a looke here drawing out a quick hypothetical where we have center 3 recycling glass. Again we
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know that glass and plastic can't be together which tells us that plastic
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must be in 1 because we already know it can't be in 2 because it would also place
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it
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in 1 which would violate the 3rd condition that there's only one plastic. So now looking at center 2 we know
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we can only have maximum two center 2 now because we've already placed plastic in
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center 1 which means that the two that we place in center 2 are also going to join
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center 1 and maximum three so we can't have more than two in center 2. Again we
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know that plastic can't be present and we also know that glass can't present because
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if glass was present too it would put it in 1 based on condition two which
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would violate condition three that plastic and glass can't go together. So the only
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possibilities left for center 2 are N, T & W. Again we know from question 21 the only
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possibilities are either W and N or N and T. So regardless we're gonna
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have N and one of T or W. So what material must center 2 recycle? Well (B)
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newsprint would be the correct answer.