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GMAT 800


Q) Vegan Diet proponents have often claimed that low-carb, high-fat diets integral in a non-vegetarian diet is dangerous, and therefore, they have a superior and balanced diet. In fact, vegan diets lack important nutrients, responsible for brain function and blood formation.

Which of the following statements support the conclusion of the argument?

a) Carnosine - a protective agent against aging is found only in Animal Foods.

b) Vitamin B12, found mostly in meat, and responsible for vital brain functions, is deficient in a Vegan diet with a recent study showing 92% of vegans lacking this crucial nutrient.

c) There are no conclusive studies to support the theory put forward by Vegan Diet proponents that meat, eggs, saturated fat or cholesterol cause any harm.

d) Vegan diets require you to avoid sugar, trans fat, and vegetable oil. This is the reason for the health benefit, and not abstinence from Meat

e) Vegan diets have health benefits in the short term but nutrient deficiencies follow that require steady intake of supplements.

For answer and explanation, Download F1GMAT's Mastering GMAT Critical Reasoning (Read the Chapter on How...


When Al Gore's 'An Inconvenient Truth' earned awards and accolades and demonstrated Global Warming as a human-induced phenomenon, not many scientists looked beyond the research papers from 'US Global Change Research Program'. The 2006 documentary was a fodder to Global Warming alarmists, who forgot the fundamental fact that the average temperature has climbed by only 1.4 degrees Fahrenheit (0.8 Degree Celsius) since global temperatures began to be monitored systematically from 1880.

The research by Andrew Dessler and his team from Texas A&M University has confirmed the previous debated theory that Water Vapor is the most contributing greenhouse gas, doubling the climate warming caused by the increased levels of CO2 in the atmosphere. Atmospheric Infrared Sounder (AIRS) on NASA’s Aqua satellite became the first device to measure water vapor at all altitudes within the troposphere. Using AIRS, the scientists measured the humidity along the lowest 10 miles of the atmosphere. The level of humidity along with observation about carbon dioxide and other greenhouse gases allowed researchers to grasp the interplay of the three major contributors of Global Warming. More than the increase in temperature, the compounding nature of Water Vapor is what worrying scientists around the world. Increase in water vapor leads to a warmer temperature that results in more water vapor emitted into the air.

...


Q) If you go by the popularity of Gaming units, as of Jan 4th 2015, Sony’s PS4 sold 18.5 million units and reached 10.9 million PlayStation Plus subscribers, a growth of 37.9% from October 2014.  Despite the massive growth, Sony’s PlayStation is behind Microsoft’s Xbox One, which in November 2014 accelerated its sales due to a $50 price cut, and a bundle of free games. On 28th January 2015, Spotify, the leading music subscription service announced an exclusive partnership with PS4, and offered digital music to 64 million PlayStation Network users. With the announcement, Feb 2015 saw a spike in sales for the PS4 units by 45%.

Which one of the following conclusions is valid for the above statements?


a) PS4, on itself, does not have the brand reach nor the mass following needed to overtake Microsoft’s Xbox One.

b) Demand for Microsoft’s Xbox One declined during Feb 2015

c) Bundling of services has increased the market share for Sony’s PS4

d) Price Cut had a direct impact on sales of Gaming Units

e) Sales of Sony’s PS4 will overtake Microsoft’s Xbox One in 2015

For answer and explanation, Download F1GMAT's Mastering GMAT Critical Reasoning...


Q) The Chorus from Sam Smith's "Stay With Me" has an eerie resemblance to Tom Petty's 1989 song - “I Won’t Back Down. Mr. Petty and Jeff Lynne, the Songwriters, filed a copyright violation case and settled out of court. Modern song creation has evolved away from the standard process - starting with the lyrics, the sheet music, and finally the tune. For new song creators, it would be impossible to fight cases where some parts of the song had similar sheet music as the songs in the 70s and 80s.

Which one of the following statements weakens the argument?


a) According to Muzic82 - an aggregated opinion database from Music Experts, 98% of the experts felt that Sam Smith's song had a more traditional choir gospel theme than Tom Petty's Chorus.

b) Sam Smith chose to settle the case out of court, to avoid any disruption in his promotional tours.

c) In a similar case, Marvin Gayle's family was awarded $7.3 million as compensation when Robin Thicke and Pharrell Williams - the songwriter-producer of the 2013 hit "Blurred Lines", infringed on the copyright of the 1977 Marvin Gaye Song "Got to Give It Up" without any due credit.  

d) In modern songwriting - tone, intensity, and feel are equally important to identify the uniqueness of the song

e) In another instance, 2013's #1 Song “Thrift Shop", by Macklemore & Ryan Lewis...


Flawed Thinking in GMAT Critical Reasoning
Critical Reasoning is a skill that you cannot develop in a couple of days. But GMAT Critical reasoning can be mastered if you understand some of the common pitfalls in our logical deduction. The most common mistakes are made in Syllogism.



What is Syllogism?


A Syllogism is a type of argument where you have a conclusion based on one or more premises. Let’s look at an example

Premise 1: All roses are flowers

Premise 2: Some flowers have thorn

Conclusion: Therefore Some roses have thorn


Most GMAT test taker would agree with the conclusion or naturally make such conclusions when they are presented with similar critical reasoning questions. The CONCLUSION is wrong! We are intuitive creatures. Even when our logical mind asks us to think before making any conclusion, the lazy intuitive mind will force us to make the obvious wrong conclusion. Another factor that contributes to the wrong conclusion is the use of our knowledge about roses (that it has thorns) to make the conclusion.

Remember, GMAT Critical reasoning requires you to...


Set A consists of integers -9, 8, 3, 10, and J; Set B consists of integers -2, 5, 0, 7, -6, and T. If R is the median of Set A and W is the mode of set B, and R^W is a factor of 34, what is the value of T if J is negative?

(A) -2
(B) 0
(C) 1
(D) 2
(E) 5

Solution

This problem demonstrates a helpful note about statistics problems – quite often the key to solving a stats problem is something other than stats: number properties, divisibility, algebra, etc. The statistics nature of these problems is often just a way to make a simpler problem look more difficult.

Here, the phrase “factor of 34? should stand out to you, as there are only four factors of 34, so you can narrow down the possibilities pretty quickly to 1, 2, 17, and 34. And because the number in question must be an exponential term that becomes a factor of 34, it’s even more limited: 2, 17, and 34 can only be created by one integer exponent – “itself” to the first power.

The base of that exponent is going to be the median of Set A, and because we know that the median of Set A will be 3 (a negative term for variable J means that 3 will be the middle term), the question becomes that much clearer. 3^W can only be a factor of 34 if it’s set equal to 1, and the only way to do that is for W to be 0. REMEMBER: anything to the power of...


A newborn kangaroo, or joey, is born after a short gestation period of only 39 days. At this stage, the joey’s hind limbs are not well developed, but its forelimbs are well developed, so that it can can climb from the cloaca into its mother’s pouch for further development. The recent discovery that ancient marsupial lions were also born with only their forelimbs developed supports the hypothesis that newborn marsupial lions must also have needed to climb into their mothers’ pouches.

The argument in this passage relies on which of the following assumptions?

[A] All animals that are born after a short gestation period are born with some parts of their bodies underdeveloped.
[B] Well developed forelimbs would have been more advantageous to ancient marsupial lions than well developed hind limbs would have been.
[C] If the newborn marsupial lion did not climb into its mother’s pouch, then paleontologists would be able to find evidence of this fact.
[D] Newborn marsupial lions that crawled into their mothers’ pouches could not have done so had they not had only their forelimbs developed at birth.
[E] Newborn marsupial lions would not have had only their forelimbs developed if this development were of no use to the marsupial lions.

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