Quantifiers Questions - - Question 17

All parrots can learn to speak a few words and phrases. Not all parrots have equally pleasant dispositions, though so...

Lucas August 1, 2019

Q3 in Melodys Diagram

Ok, so I got to the right answer, because I knew it'd have Some in the Statement, and all my steps being correctly diagrammed out, but where I am lost in Melody's explanation is at Q3. Q3: P-some-TAO not TAO-some-P I thought we're not supposed to negate quantifiers, yet here she has. Please explain

Replies
Create a free account to read and take part in forum discussions.

Already have an account? log in

Ravi August 2, 2019

@Lucas,

Here's how I'd do this problem:

Parrot - >speak
Australian parrots - some - sweet temper
Parrot - most - >affection

We're looking for something that must be true based on the information
in the stimulus.

(A) says "Some parrots that can learn to speak are sweet tempered."

Since we know that all parrots can learn to speak, and some parrots
(the Australian parrots) are sweet tempered, it must be the case that
some parrots that can learn to speak are also sweet tempered. Thus,
(A) is the correct answer choice.

"Some" statements are reversible, but you cannot negate them. While I
was not able to pull up her video explanation, what you wrote looks to
be incorrect. It should instead read

P - some - TAO
TAO - some - P

We apologize for any confusion. Let us know if you have any other questions!

farhan August 20, 2019

So just to be clear quantifiers such as "many" "not all" "almost any" means that it is a "some" quantifier because I was reading some of the other posts and that is the impression I got is this the case?