Logic Game In/Out Grouping Question

[BradleyT443]

Hi,

I am making a mistake in these question sets and I think it is because I am misinterpreting this rule. Can you please provide an explanation. I found similar explanations to this in the book, but not a direct explanation. I have only found it in a positive form and want to double verify because I seem to still be doing it wrong.

"If Terry volunteers, then neither Felicia nor Veena volunteers"

T --- -F and -V
V or F --- - T

If I were to draw lines and create a chart.

IN OUT
T T
V V
F F

I would do:
Line from (In) T to (out) F and (out) V arrows points at V and F
Line from (In) V to (out) T arrow pointed at T
Line from (in) F to (out) T arrow pointed at T

This seems a bit off to me because I believe it is OR not AND, but didn't see a way to notate that in the diagram for in out. Maybe I am just completely wrong?

Thanks so much,

-Brad

[ohthatpatrick]

You sounded on point to me!

When we have "and" on the right side, we can split up the conditional.

given this
T --> ~F and ~V

we could think of it as
T --> ~F
and
T --> ~V

and when we have "or" on the left side, we can split up the conditional.
F or V --> ~T

this means
F --> ~T
and
V --> ~T

The lines/arrows you described are all the ones we're seeing here:
T --> ~F
T --> ~V
F --> ~T
V --> ~T

Let me know if you have questions on any of this.