If Pinsky serves on every subcommittee on which French serves and every subcommittee on which Ghauri serves, then whi...

zia305 on August 29, 2020

Explanation

Can someone please explain the right answer?

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Emil-Kunkin on December 25 at 08:58PM

The two conditions here mean that for every time F or G appear, P must also appear. This also guarantees that P is the member who is on all three so we have

1 P F
2 P G
3 P

We also know that HI cannot both be in the third subcommittee.

A cannot happen, since this would force H and I into the third slot together.
B cannot happen because there simply aren't enough slots for this to happen
C could happen, see below
D can't happen as this would violate the FG rule
E cannot happen because it would violate the HI rule

1 P F H
2 P G H
3 P I M