Forum Home > GMAT > Quantitative > Problem Solving (PS)
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.
Dec 1310:00 AM EST
-12:00 PM EST
Have you ever wondered how to score a PERFECT 805 on the GMAT? Meet Julia, a banking professional who used the Target Test Prep course to achieve this incredible feat. Julia's story is nothing short of an inspiration.
Dec 1410:00 AM EST
-12:00 PM EST
Think a 100% GMAT Verbal score is out of your reach? Target Test Prep will make you think again! Our course uses techniques such as topical study and spaced repetition to maximize knowledge retention and make studying simple and fun.
Dec 1411:00 AM IST
-01:00 PM IST
Attend this session to learn how to Deconstruct arguments, Pre-Think Author’s Assumptions, and apply Negation Test.- Dec 15
11:00 AM IST
-01:00 PM IST
Attend this free GMAT Algebra Webinar and learn how to master the most challenging Inequalities and Absolute Value problems with ease. 
Dec 1608:00 AM PST
-11:59 PM PST
GMAT Club 12 Days of Christmas is a 4th Annual GMAT Club Winter Competition based on solving questions. This is the Winter GMAT competition on GMAT Club with an amazing opportunity to win over $40,000 worth of prizes!- Dec 17
09:00 AM PST
-10:00 AM PST
Join Manhattan Prep instructor Whitney Garner for a fun—and thorough—review of logic-based (non-math) problems, with a particular emphasis on Data Sufficiency and Two-Parts. - Dec 18
10:00 AM PST
-11:00 AM PST
Here is the essential guide to securing scholarships as an MBA student! In this video, we explore the various types of scholarships available, including need-based and merit-based options.
07 Feb 2020, 08:03
Kudos
Bookmarks
D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
78% (01:48) correct
22%
(02:02)
wrong
based on 199
sessions
History
Date
Time
Result
Not Attempted Yet
In the past century, North America has shifted its main energy source first from wood to coal, then from coal to oil and natural gas. With each transition, the newly dominant fuel has had less carbon and more hydrogen than its predecessor had. It is logical to conclude that in the future the main energy source will be pure hydrogen.
Which one of the following expresses a general principle that could underlie the argument?
(A) If series of transitions from one state of a system to another state of that system is allowed to continue without interference, the initial state of the series will eventually recur.
(B) If each of two desirable attributes belongs to a useful substance, then the most useful form of that substance will have those two attributes in equal amounts.
(C) If the second stage of a process has been completed more quickly than the first stage, the third stage of that process will be completed more quickly than the second stage.
(D) If each step in a series of changes involves a decrease of one attribute of the thing undergoing the change and an increase of another, the series will terminate with the first attribute eliminated and only the second attribute present.
(E) If one substance is better for a certain purpose than another substance is, then the best substance for that purpose is one that includes among its attributes all of the attributes of the first substance and none of the attributes of the second substance.
Which one of the following expresses a general principle that could underlie the argument?
(A) If series of transitions from one state of a system to another state of that system is allowed to continue without interference, the initial state of the series will eventually recur.
(B) If each of two desirable attributes belongs to a useful substance, then the most useful form of that substance will have those two attributes in equal amounts.
(C) If the second stage of a process has been completed more quickly than the first stage, the third stage of that process will be completed more quickly than the second stage.
(D) If each step in a series of changes involves a decrease of one attribute of the thing undergoing the change and an increase of another, the series will terminate with the first attribute eliminated and only the second attribute present.
(E) If one substance is better for a certain purpose than another substance is, then the best substance for that purpose is one that includes among its attributes all of the attributes of the first substance and none of the attributes of the second substance.
22 Mar 2020, 20:20
Kudos
Bookmarks
Premise: North America has shifted its main energy source first from wood to coal, then from coal to oil and natural gas.
With each transition, the newly dominant fuel has had less carbon and more hydrogen than its predecessor had.
Conclusion: in the future the main energy source will be pure hydrogen.
Which one of the following expresses a general principle that could underlie the argument? POE
(A) If series of transitions from one state of a system to another state of that system is allowed to continue without interference, the initial state of the s[color=#ed1c24]eries will eventually recur.Opposite[/color]
(B) If each of two desirable attributes belongs to a useful substance, then the most useful form of that substance will have those two attributes in equal amounts. Opposite:
(C) If the second stage of a process has been completed more quickly than the first stage, the third stage of that process will be completed more quickly than the second stage. Outofscope: Completion-rate isn't discussed.
(D) If each step in a series of changes involves a decrease of one attribute of the thing undergoing the change and an increase of another, the series will terminate with the first attribute eliminated and only the second attribute present. Correct
(E) If one substance is better for a certain purpose than another substance is, then the best substance for that purpose is one that includes among its attributes all of the attributes of the first substance and none of the attributes of the second substance. Out of Scope: Never discussed which substance is better
With each transition, the newly dominant fuel has had less carbon and more hydrogen than its predecessor had.
Conclusion: in the future the main energy source will be pure hydrogen.
Which one of the following expresses a general principle that could underlie the argument? POE
(A) If series of transitions from one state of a system to another state of that system is allowed to continue without interference, the initial state of the s[color=#ed1c24]eries will eventually recur.Opposite[/color]
(B) If each of two desirable attributes belongs to a useful substance, then the most useful form of that substance will have those two attributes in equal amounts. Opposite:
(C) If the second stage of a process has been completed more quickly than the first stage, the third stage of that process will be completed more quickly than the second stage. Outofscope: Completion-rate isn't discussed.
(D) If each step in a series of changes involves a decrease of one attribute of the thing undergoing the change and an increase of another, the series will terminate with the first attribute eliminated and only the second attribute present. Correct
(E) If one substance is better for a certain purpose than another substance is, then the best substance for that purpose is one that includes among its attributes all of the attributes of the first substance and none of the attributes of the second substance. Out of Scope: Never discussed which substance is better
Moderators:
