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CR Tough Inference Workout
Source: LSAT 10 Actual Tests It takes 365.25 days for the Earth to make one complete revolution around the sun. Long standing convention makes a year 365 days long, with an extra day added every fourth year, and the year is divided into 52 seven-day weeks. But since 52 times 7 is only 364, anniversa...
- by francoimps
Fri Sep 05, 2014 11:22 pm- Forum: Critical Reasoning
- Topic: CR Tough Inference Workout
- Replies: 1
- Views: 1608
Hi francoimps, The flaw in the argument hinges on a implied causal relationship between people knowing certain information, and changing their behaviour. Specifically, the argument is that if people know that tongue scraping is a good way to eliminate bad breath, they will stop purchasing other pro...
- by francoimps
Wed Aug 20, 2014 5:03 pm- Forum: Critical Reasoning
- Topic: Market Analyst: Recent research confirms that the main cause
- Replies: 4
- Views: 3717
Key Issues: 1. First of all, this is not a properly structured GMAT flaw question: If you notice, all of the flaw questions in the OG are composed of Answer Choices that describe the reasoning rather than present new explanations/information. 2. Second of all, I do not agree with the correct answer:...
- by francoimps
Wed Aug 20, 2014 1:08 am- Forum: Critical Reasoning
- Topic: Market Analyst: Recent research confirms that the main cause
- Replies: 1
- Views: 1170
Market Analyst: Recent research confirms that the main cause
I know that this has already been brought up a couple of times but I would like to revive this topic because of several issues with the construction: Market Analyst: Recent research confirms that the main cause of bad breath is bacteria build-up on the tongue. The research also concludes that tongue...
- by francoimps
Wed Aug 20, 2014 12:59 am- Forum: Critical Reasoning
- Topic: Market Analyst: Recent research confirms that the main cause
- Replies: 1
- Views: 1170
Market Analyst: Recent research confirms that the main cause
I know that this has already been brought up a couple of times but I would like to revive this topic because of several issues with the construction: Market Analyst: Recent research confirms that the main cause of bad breath is bacteria build-up on the tongue. The research also concludes that tongue...
- by francoimps
Wed Aug 20, 2014 12:58 am- Forum: Critical Reasoning
- Topic: Market Analyst: Recent research confirms that the main cause
- Replies: 4
- Views: 3717
This question has a strong east coast (or European) bias, as few people in the rest of car-crazy America are used to dealing with transit tables! That said, here's a pretty quick and easy way of approaching the problem. The first train ALWAYS arrives at 45 minutes past the hour (7:45, 8:45, etc). T...
- by francoimps
Sat Aug 02, 2014 4:27 pm- Forum: Problem Solving
- Topic: Kaplan-train departure (tough)
- Replies: 11
- Views: 3154
Departure Times (DT) & Time to Destination (TD) DT: Station X: 6am, 7am, 8am, 9am... TD: 1 hour and 45 min DT: Station Y: 9am, 9:30am, 10:00am, 10:30am... TD: after 2 hours and 20 min DT:: 8am, 8:45am, 9:30am, 10:15am, 11:00am, 11:45am, 12:30nn, 1:15pm, 2:00pm, 2:45pm, 3:30 Option 1: take 7am de...
- by francoimps
Thu Jul 31, 2014 4:55 pm- Forum: Problem Solving
- Topic: Kaplan-train departure (tough)
- Replies: 11
- Views: 3154
Hi fancoimps, Your SC skills are clearly strong (or getting stronger), since you're spotting these grammar errors in the non-SC sections of the OG. In non-SC prompts, the GMAT sometimes uses "conversational"-English (you'll see this on Test Day too). It's not done with any malice - it's j...
- by francoimps
Fri Jul 18, 2014 6:48 pm- Forum: Sentence Correction
- Topic: OG Containing Own SC Mistakes in non-SC Sections?
- Replies: 2
- Views: 1348
OG Containing Own SC Mistakes in non-SC Sections?
Quantitative Review, 2nd Ed, #154 of Data Sufficiency: "A survey of employers found that during 1993 employment costs rose 3.5 percent, where employment costs consist of salary cost and fringe benefit costs..." Doesn't the sentence contain a modifier error? Shouldn't it be, "..3.5 per...
- by francoimps
Fri Jul 18, 2014 5:05 pm- Forum: Sentence Correction
- Topic: OG Containing Own SC Mistakes in non-SC Sections?
- Replies: 2
- Views: 1348
For a shorter explanation: There are x high-level officials (where x is a positive integer). Each high-level official supervises x^2 mid-level officials, each of whom, in turn, supervises x^3 low-level officials. How many high-level officials are there? (1) There are fewer than 60 low-level official...
- by francoimps
Sat Jun 28, 2014 12:07 am- Forum: Data Sufficiency
- Topic: Officials
- Replies: 16
- Views: 5646
For a shorter explanation: There are x high-level officials (where x is a positive integer). Each high-level official supervises x^2 mid-level officials, each of whom, in turn, supervises x^3 low-level officials. How many high-level officials are there? (1) There are fewer than 60 low-level official...
- by francoimps
Sat Jun 28, 2014 12:06 am- Forum: Data Sufficiency
- Topic: Officials
- Replies: 16
- Views: 5646
Probability and Combinatorics
4 individuals arrive separately at an orchestra concert with assigned seating tickets for exactly 4 seats in a special section. The first person to arrive loses his ticket stub after entry but remembers the section and sits randomly in one of the 4 seats. After that, each person arrives and takes hi...
- by francoimps
Thu Jun 26, 2014 4:44 am- Forum: Problem Solving
- Topic: Probability and Combinatorics
- Replies: 10
- Views: 3142
l = (7.5-x)^4 + 8.97^c , where c is a constant
dl/dx = 0 to minimze l
dl/dx = 4(7.5-x)^3 + 0 = 0
dl/dx = 4(7.5-x)^3, x = 7.5 for dl/dx = 0 and l to be minimized
- by francoimps
Wed Jun 25, 2014 11:20 pm- Forum: Problem Solving
- Topic: Longevity
- Replies: 12
- Views: 5093