If the summer program offers literature, then which one of the following could be true?

studying0 August 24, 2022

Confused about M

How is M a floater? Why is it true that M does not have to be offered when L is offered? The rule that M --> L or S is confusing me because there is no S but there is L, so shouldn't there be M?

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Emil-Kunkin August 26, 2022

Hi Studying0,

We know that if M -> L/S

That does not mean that we must have M if we have L or S.

It might be a good idea to review sufficient and necessary conditions.

Cody-Nelson May 31, 2023

Isn't this restriction a contrapositive "If mathematics is offered, then either literature or sociology (but not both) is offered."

Because of the "IF" as an indicator for a contrapositive and if you flip it, if literature is offered, then mathematics would be required to be offered no? I chose question C because that's the only one that made sense to me but I'm not entirely sure why it is correct.

Emil-Kunkin June 4, 2023

Hi, the contrapositive of the rule in question would be that if neither L nor S (or if both) are offered, then math cannot be offered. Contrapositives mean reversing and negating. Not just flipping.