Q4

 
ShehryarB30
Thanks Received: 1
Elle Woods
Elle Woods
 
Posts: 99
Joined: July 07th, 2018
 
 
 

Q4

by ShehryarB30 Thu Jan 03, 2019 11:04 pm

Could you pls explain this
User avatar
 
ohthatpatrick
Thanks Received: 2870
Atticus Finch
Atticus Finch
 
Posts: 4098
Joined: April 01st, 2011
 
 
 

Re: Q4

by ohthatpatrick Sun Jan 06, 2019 1:56 am

From rules 1 and 2, we know that J and L are mutually exclusive: one will always be on stage, one will always be off.

And from rule 4, we know that G will always be on stage, because J and L are both women, so there will always be at least one woman on stage.

Thus, when Q4 says that there needs to be more women than men, we can start by thinking, "I know I have at least one man, G. So I need at least two women."

And since we can't have all THREE women on stage at any one time (because J and L can't both be onstage together), the only way to obey this condition is to have a scenario with 2 women, 1 man.

We know the 1 man is G, so F and H are off stage.

If F is off stage, then so is L.

So the 2 women, 1 man scenario will be

..on......off...
J K G | F H L

Ultimately, the question didn't even care who the specific people were, so once we sorted out the idea that
women > men ---> 2 women and 1 man
we were already done.

(C) is the answer.