Based on the passage, it can be concluded that the author and Broyles-González hold essentially the same attitude toward

Randall on September 14, 2019

Most statements being reversable.

If most statements are reversible, do we always take the contrapositive of the quantifying statement? Referring to question #2 answer choice D. Ex: WLG-most-SPP SPP-some-WLG or WLG-most-SPP WLG-some-SPP

2 Replies

Victoria on September 14, 2019

Hi @No_Middle,

Contrapositive statements only apply to S&N statements, not quantifiers.

We know from the passage that most countries with a single political party have corrupt national governments. We also know that all corrupt national governments have weak local governments.

From this, we can conclude:

SPP - most - CNG - > WLG
SPP - most - WLG

And we know that 'most' statements are reversible if we replace 'most' with 'some', so:

WLG - some - SPP

Answer choice D reads: "the majority of countries with weak local governments have a single political party."

WLG - most - SPP

If we reverse this, SPP - some - WLG

This is the reverse of what is concluded by the passage so it is incorrect.

When diagramming quantifier statements always diagram them as written. 'Some' statements are reversible and 'most' statements are reversible if you replace 'most' with 'some.'

I hope this helps! Please let us know if you have any further questions.

Randall on September 15, 2019

I must have missed that in the lesson. Really helps a lot. Thanks for the feedback!