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16 Dec 2018, 05:22
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
(N/A)
Question Stats:
50% (01:51) correct
50%
(00:51)
wrong
based on 4
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Not Attempted Yet
Guys, this is my first GMAT preparation after more than 5 years of job and I am little less than one month into the preparation. One huge problem I am facing is deciding (or not to) on the option E especially for integer related questions.
Here's a question from GMAT OG 2018
If n is the least of three different integers greater than 1, what is the value of n?
1) The product of the three integers is 90
2) One of the integers is twice one of the other two integers
After writing formulas and different equations in notebook i chose (which was wrong) option E, that 1 and 2 together are not sufficient. However, the answer explanation was huge and that included a number of trial and error method including the numbers like 2, 3,6, 5 and 9 which cancels out some combinations but stay true for some and other things, and it was evident that option C (together sufficient) would be the choice.
My question is as I know there will be certain time limit for all the questions in order to successfully answer all, is there a trick to this? or like, how much time should i actually devote into the trail and error? what is the way out on a general basis? Any suggestion would be really helpful.
Here's a question from GMAT OG 2018
If n is the least of three different integers greater than 1, what is the value of n?
1) The product of the three integers is 90
2) One of the integers is twice one of the other two integers
After writing formulas and different equations in notebook i chose (which was wrong) option E, that 1 and 2 together are not sufficient. However, the answer explanation was huge and that included a number of trial and error method including the numbers like 2, 3,6, 5 and 9 which cancels out some combinations but stay true for some and other things, and it was evident that option C (together sufficient) would be the choice.
My question is as I know there will be certain time limit for all the questions in order to successfully answer all, is there a trick to this? or like, how much time should i actually devote into the trail and error? what is the way out on a general basis? Any suggestion would be really helpful.
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 Data Sufficiency (DS) 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.
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16 Dec 2018, 06:07
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Hii.
In this question they are asking for the value of n, which happens to be a least number in 3 digit integer. Notice that the question specifically asks for the value of n which means we need to find a single particular value and not any kind of range! Now moving onto the question...
Statement 1: The product of the three integers is 90.
90=2∗3∗3∗5
We need a particular number(n)
Let's try the possibilities: 2*5*9 OR 6*3*5 OR 3*5*6 (Remember each digit can only range till 9)
Herein, the least nunber can be 2 or 3. We are getting 2 options. We need one single value. NOT SUFFICIENT.
Statement 2: One of the integers is twice the other two integers.
Again let's try some combinations.
1,3,6 OR 2,4,8 OR 3,2,4 etc. Any combination of numbers is possible here.
NOT SUFFICIENT
(1+2)
90=2*3*3*5
If one number is twice of the other, only 2 and 2*3 possible
Hence, the integers are 3,5,6 and least is 3. We are getting a single value.
SUFFICIENT
ANSWER IS OPTION C.
Hope it helps.
Posted from my mobile device
In this question they are asking for the value of n, which happens to be a least number in 3 digit integer. Notice that the question specifically asks for the value of n which means we need to find a single particular value and not any kind of range! Now moving onto the question...
Statement 1: The product of the three integers is 90.
90=2∗3∗3∗5
We need a particular number(n)
Let's try the possibilities: 2*5*9 OR 6*3*5 OR 3*5*6 (Remember each digit can only range till 9)
Herein, the least nunber can be 2 or 3. We are getting 2 options. We need one single value. NOT SUFFICIENT.
Statement 2: One of the integers is twice the other two integers.
Again let's try some combinations.
1,3,6 OR 2,4,8 OR 3,2,4 etc. Any combination of numbers is possible here.
NOT SUFFICIENT
(1+2)
90=2*3*3*5
If one number is twice of the other, only 2 and 2*3 possible
Hence, the integers are 3,5,6 and least is 3. We are getting a single value.
SUFFICIENT
ANSWER IS OPTION C.
Hope it helps.
Posted from my mobile device
16 Dec 2018, 07:01
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Hey Kinjal729
Welcome to GMATClub.
The above question has been discussed here:
https://gmatclub.com/forum/if-n-is-the- ... 45672.html
You can probably look at the solutions that have already been posted. Please SEARCH questions before posting them
Hope that helps!
Welcome to GMATClub.
The above question has been discussed here:
https://gmatclub.com/forum/if-n-is-the- ... 45672.html
You can probably look at the solutions that have already been posted. Please SEARCH questions before posting them
Hope that helps!
