If plane 1 is used, its crew could consist of

sarahlsat on August 7 at 05:53PM

question 23

How can you figure out if Bob or Cindy is the one that can fly in place 1?

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Emil-Kunkin on August 7 at 06:59PM

Hi, we would have to use process of elimination here. We can automatically knock out d and e since Dave can never be in 1.

We can knock out C because if those four fly together, then only a and d are left, but this is not valid since a and d cannot go together, and d would need to fly with a pilot. So, c can't happen.

We can also knock out A since it takes up all three of the pilots, which would leave d and e without a pilot, which is invalid.

So, we are left with b.