Need assistance answering these Digital System Architecture questions, please help!

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GroovyJack

Joined Oct 6, 2021
1
These are two questions from an old class quiz, never was shown how to solve them, and they are similar to what I've been working on in a current digital systems class. The main issue I can't figure out is is Part a and b, deriving the equations for C5, C6, P0_2, G0_2, and calculating the delay of generating the full sum and carry out.

The answers I had for them were wrong, and I was never shown my mistakes and what I needed to do when I took this class. The last image is the incorrect answer for the second question.
 

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