Sufficient & Necessary Questions - - Question 27

Unless the residents of Glen Hills band together, the proposal to rezone that city will be approved. If it is the cit...

Will-Carey August 17, 2020

There is a jump in logic (missing assumption)

Just because schools are overcrowded and roads are congested does not necessarily mean an increase in taxes for citizens unless we make the assumption that the city will try to fix these issues. The question stem never states that these issues would be fixed, it is possible that schools remain overcrowded and roads remain congested. Nowhere does it say that the city is going to build new schools, just that its not possible to build them without higher taxes. How can you conclusively say that taxes will undoubtedly be raised for citizens using this logic when an assumption is needed to complete it?

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Will-Carey August 17, 2020

Ah. Just re-read and it says "roads so congested that new roads would be built". My mistake

shunhe August 17, 2020

Glad you figured it out, let us know if we can help with anything else!

parikhnj October 4, 2020

This is how I mapped it out

Not band together >>>> Petition Approved >>>> Build Water System v Build Sewer System >>>> New Residents >>>> Overcrowed Schools and Congested Roads >>>> Substantial Tax Increase

Contrapositive

No Overcrowded Schools v No Congested Roads >>> No New Residents >>> Not build water system v Not build sewer system >>>> Petition not approved >>> Residents banded together

parikhnj October 4, 2020

I did get it right, but im curious if anyone else mapped it like this

ohanamgt January 3, 2021

Off the bat the stimulus has an "unless" indicator. So shouldn't ban together be the necessary condition and the negation of be approved be not approved?

Nishu-Afobunor January 9, 2021

Is there a full list where we can access necessary and sufficient indicators. I feel like the video and practice cards didn't specify enough about terms like "all is needed", "no", or "must have/has"

Nishu-Afobunor January 9, 2021

Is there a full list where we can access necessary and sufficient indicators. I feel like the video and practice cards didn't specify enough about terms like "all is needed", "no", or "must have/has"