PR Gmat DS question

This topic has expert replies
Master | Next Rank: 500 Posts
Posts: 131
Joined: 05 May 2008
Thanked: 1 times

PR Gmat DS question

by Mclaughlin » Sat Jun 21, 2008 3:42 pm
Ok, so i got this one wrong because I didn't assume something, which they tell you to never assume anything on DS.

Bob purchased 18 cans of soda, some of which containted diet soda. How many cans of the cans did not contain diet soda?

1. Of the can's bob purchased, the number containing soda is equal to the number not containing diet soda..

2. of the cans bob purchased, the number containing diet soda is odd.


Am i just supposed to assume that there are only 2 types of soda? What if there were 107 types of soda and they are only talking about 2 types? how do you tackle something like this when the information isn't clear.

Master | Next Rank: 500 Posts
Posts: 132
Joined: 27 Apr 2008
Location: Portugal
Thanked: 7 times

by atlantic » Mon Jun 23, 2008 10:27 am
What is OA?

Per you text I assume that is not A. Correct?

If so, this is a stupid problem that tests nothing but the brains of the people who wrote it.

Master | Next Rank: 500 Posts
Posts: 167
Joined: 26 Feb 2008
Thanked: 5 times
Followed by:1 members

by pranavc » Mon Jun 23, 2008 6:15 pm
My guess is A too. Why on earth would it be wrong?

Legendary Member
Posts: 631
Joined: 18 Feb 2008
Thanked: 29 times
Followed by:3 members

by netigen » Mon Jun 23, 2008 8:24 pm
This one is a poorly worded question.

Option 1 tells you that

all soda (the number containing soda) = all soda - diet soda

and the question tells you that all soda = diet soda + other kind of soda = 18

The problem is what does PR mean by the number containing soda in the option A is it all soda or is it other kind of soda.