P: X → not YP: ?C: Y → Z

Titice May 26, 2022

Not Z= X

How did you get to this conclusion?

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Naryan-Shukle May 26, 2022

Hi @Titice,

We start with:
C-->notY
---?---

And we need to get to:
Y--->Z

Do we have a Y to start with? Somewhat, we have a notY. Let's manipulate that first term to start with Y.

Y--->notX.

Ok, now we need to end up with Z. How do we get from notX to Z? Well...we just connect them. Simple as that.

Y---->notX---->Z

The missing term is:

notX--->Z
notZ--->X (contrapositive)