Events & Promotions
|
|
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Apr 2711:00 AM EDT
-12:00 PM EDT
Prefer video-based learning? The Target Test Prep OnDemand course is a one-of-a-kind video masterclass featuring 400 hours of lecture-style teaching by Scott Woodbury-Stewart, founder of Target Test Prep and one of the most accomplished GMAT instructors
Apr 2808:00 AM PDT
-11:00 AM PDT
Whether you are just beginning your MBA journey or fine-tuning your path to a 700+ score, GMAT Day is designed to give you a competitive edge.
31 Aug 2006, 07:13
Kudos
Bookmarks
So let's do a vertical comparison here Apollo. I put these on the board in case other members have some shortcuts to add..
Scenario 1:
Set S consists of all non-negative even integers and all integers ending with 3 or 7. If an integer between 1 and 105, inclusive, is selected at random, approx, what is the closest approximation in % to the probability that this integer is a member of set S?
Scenario 2:
Set S consists of all non-negative even integers or all integers ending with 3 or 7. If an integer between 1 and 105, inclusive, is selected at random, approx, what is the closest approximation in % to the probability that this integer is a member of set S?
Scenario 1:
Set S consists of all non-negative even integers and all integers ending with 3 or 7. If an integer between 1 and 105, inclusive, is selected at random, approx, what is the closest approximation in % to the probability that this integer is a member of set S?
Scenario 2:
Set S consists of all non-negative even integers or all integers ending with 3 or 7. If an integer between 1 and 105, inclusive, is selected at random, approx, what is the closest approximation in % to the probability that this integer is a member of set S?
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Quantitative Questions Forum
Still interested in this question? Check out the "Best Topics" block below for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
31 Aug 2006, 07:37
Kudos
Bookmarks
Hi Matt
Both scenarios you presented are of mutually exclusive sets. So for the first scenario the Probability of the intersection would be 0
The second scenario 19/105 + 52/105 since again they will not have an intersection you will not need to subtract the elements they have in common
Both scenarios you presented are of mutually exclusive sets. So for the first scenario the Probability of the intersection would be 0
The second scenario 19/105 + 52/105 since again they will not have an intersection you will not need to subtract the elements they have in common
31 Aug 2006, 07:51
Kudos
Bookmarks
apollo168
Close, you forgot to add one (twice).
The first scenario is Mut Ex.
To get all multiples of 2 (inclusive) ---> 105-1/2 = 52
To get all numbers ending with 3 (inclusive) ---> 103-3/10+1 = 11
To get all numbers ending with 7 (inclusive) ---> 97-7/10+1 = 10
Mut Ex. Formula: Prob(even)+Prob(3)+Prob(7)/total possibilities
52+11+10/105
Simplify to 73/105 ~70%
Now how could we rewrite this problem so that it wouldn't be Mut Ex?
