Identify the criterion for the correct answer choice in terms of true:Each of the following statements must be true E...

TashaPenwell February 18, 2017

Could be true

What is the difference between "not necessarily true" and "could be true" as the answer? Thank you.

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Mehran February 20, 2017

@TashaPenwell "not necessarily true" is the logical opposite of "must be true."

Remember, the logical opposite is the minimum required to disprove the statement.

Since "must be true" means it is 100% true, the minimum required to disprove this statement is that it is "not necessarily true," i.e. there is a possibility it is false (could be false).

"Could be true," on the other hand, is the logical opposite of "cannot be true."

"Could be true" means that it is possible. "Cannot be true" means that it is not possible (must be false).

Hope that helps! Watch the end of our Intro to Logical Reasoning video for an in-depth discussion these concepts.

STACEYCOX43 September 23, 2020

@Mehran thanks for your detailed explanation

Joseph September 30, 2022

How do we know we are looking for the logical opposite here?

Emil-Kunkin December 18, 2022

I think the except would be the key here