Discussion
What is the total number of the soft drink names whose exact ranks can be deduced from the partial survey results?
*This question is included in Sequencing: Lesson Set 2 (of 5) - Variable Chains, question #15
| (A) | one |
| (B) | ... |
| (C) | ... |
| (D) | ... |
| (E) | ... |
| (F) | ... |
The solution is
Posted: 11/06/2011 18:19
Can you explain the answer?
Posted: 11/06/2011 22:23
Hola Aggie,
Let's start with what we know.
Rules 1- 3 give us:
[most votes.......least votes]
J...O...K...M
Rule 4:
7th: ~N
Rule 5:
L...P...N/O
So, based on our chains, we've got two candidates for last place/least votes:
M, N.
But wait, N can't be last (Rule 4). So M must be last.
How 'bout the next to last slot (6th)?
Looks like we could have K -OR- N in the 6th slot.
Now it's looking like "(A)" will be the answer.
Let's look at the other end of the sequence to make sure. Looks like L -OR- J could be 1st (most votes).
So the only position we know for sure is M's. M must be last. Choice "(A)" is our winner.
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http://twitter.com/ArcadiaPrep
Let's start with what we know.
Rules 1- 3 give us:
[most votes.......least votes]
J...O...K...M
Rule 4:
7th: ~N
Rule 5:
L...P...N/O
So, based on our chains, we've got two candidates for last place/least votes:
M, N.
But wait, N can't be last (Rule 4). So M must be last.
How 'bout the next to last slot (6th)?
Looks like we could have K -OR- N in the 6th slot.
Now it's looking like "(A)" will be the answer.
Let's look at the other end of the sequence to make sure. Looks like L -OR- J could be 1st (most votes).
So the only position we know for sure is M's. M must be last. Choice "(A)" is our winner.
Follow Arcadia on Twitter:
http://twitter.com/ArcadiaPrep
Posted: 11/11/2011 07:41
Thanks that`s really helpful!