Manhattan GMAT Inequalities Problem Set Q 5
If x>y ,and x<6> -3,what is the largest prime number that could be equal to x+y?
My answer :
x can be 0 1 2 3 4 5
y can be -2 -1 0 1 2 3 4 (as it is less that x)
So largest prime no is 5+2 =7
But this is wrong according to solution
Please help...
Inequality Question........ Help
This topic has expert replies
GMAT/MBA Expert
- lunarpower
- GMAT Instructor
- Posts: 3380
- Joined: Mon Mar 03, 2008 1:20 am
- Thanked: 2256 times
- Followed by:1535 members
- GMAT Score:800
hey.
when you post problems like this one, with "<" and ">" signs, you have to disable HTML. otherwise, the forum will "think" that the inequality signs are actually html tags, and will interpret them accordingly - an action that includes ignoring all the text between a "<" and a ">" if it doesn't constitute a valid html tag.
therefore, large swaths of your text are disappearing from the problem.
to fix this: check the Disable HTML in this post box underneath the text when you're posting.
when you post problems like this one, with "<" and ">" signs, you have to disable HTML. otherwise, the forum will "think" that the inequality signs are actually html tags, and will interpret them accordingly - an action that includes ignoring all the text between a "<" and a ">" if it doesn't constitute a valid html tag.
therefore, large swaths of your text are disappearing from the problem.
to fix this: check the Disable HTML in this post box underneath the text when you're posting.
Ron has been teaching various standardized tests for 20 years.
--
Pueden hacerle preguntas a Ron en castellano
Potete chiedere domande a Ron in italiano
On peut poser des questions à Ron en français
Voit esittää kysymyksiä Ron:lle myös suomeksi
--
Quand on se sent bien dans un vêtement, tout peut arriver. Un bon vêtement, c'est un passeport pour le bonheur.
Yves Saint-Laurent
--
Learn more about ron
--
Pueden hacerle preguntas a Ron en castellano
Potete chiedere domande a Ron in italiano
On peut poser des questions à Ron en français
Voit esittää kysymyksiä Ron:lle myös suomeksi
--
Quand on se sent bien dans un vêtement, tout peut arriver. Un bon vêtement, c'est un passeport pour le bonheur.
Yves Saint-Laurent
--
Learn more about ron
-
- Newbie | Next Rank: 10 Posts
- Posts: 4
- Joined: Fri Jul 11, 2008 11:08 pm
-
- Master | Next Rank: 500 Posts
- Posts: 104
- Joined: Wed Jun 04, 2008 4:04 pm
- Thanked: 6 times
Ok I have disabled HTML..Ques is
Manhattan GMAT Inequalities Problem Set Q 5
If x>y ,and x<6 and y> -3,what is the largest prime number that could be equal to x+y?
My answer :
x can be 0 1 2 3 4 5
y can be -2 -1 0 1 2 3 4 (as it is less that x)
So largest prime no is 5+2 =7
But this is wrong according to solution
Please help...
Answer is not 3...
Please explain why u said 7 is wrong..
Manhattan GMAT Inequalities Problem Set Q 5
If x>y ,and x<6 and y> -3,what is the largest prime number that could be equal to x+y?
My answer :
x can be 0 1 2 3 4 5
y can be -2 -1 0 1 2 3 4 (as it is less that x)
So largest prime no is 5+2 =7
But this is wrong according to solution
Please help...
Answer is not 3...
Please explain why u said 7 is wrong..
Last edited by swati.sug on Sat Jul 12, 2008 12:17 pm, edited 1 time in total.
-
- Master | Next Rank: 500 Posts
- Posts: 104
- Joined: Wed Jun 04, 2008 4:04 pm
- Thanked: 6 times
Ans in manhattan gmat says:
Max value for x is 6 and since x>y max value for y is 6.
thus x + y can have max value 12.
The largest prime no less than 12 is 11 . Thus answer is 11.
Is this right approach for such questions?
Max value for x is 6 and since x>y max value for y is 6.
thus x + y can have max value 12.
The largest prime no less than 12 is 11 . Thus answer is 11.
Is this right approach for such questions?
Does the problem state that x<6 or x<=6? as in, less than, or less than or equal to? because if it's 'less than', then the manhattan gmat answer doesn't make sense. the max value for x would be 5 (assuming x belongs to I).swati.sug wrote:Ans in manhattan gmat says:
Max value for x is 6 and since x>y max value for y is 6.
thus x + y can have max value 12.
The largest prime no less than 12 is 11 . Thus answer is 11.
Is this right approach for such questions?
It seems to me that the answer should be 7 as well, since the max value for x is 5, and the max value for y is 4. 5+4=9. largest prime under 9 is 7.
Unless, of course, x and y are not integers. if x=5.9 and y=5.1, then x+y would be 11...
any thoughts?
-
- Legendary Member
- Posts: 829
- Joined: Mon Jul 07, 2008 10:09 pm
- Location: INDIA
- Thanked: 84 times
- Followed by:3 members
Even i think Manhattan answer is wrong if its just greater than and not(>=)..
My answer is also 3.
X can take values from - infinity to positive 5.
Y can take values from -2 to positive infinity.
but since X>Y
X can take values, 5,4,3,2,1,0
and y can take only -2 and -1 ( as -1 is smaller than 0)
so the prime number will be 5 +(-2) = 3
let me know if my understanding is right.
My answer is also 3.
X can take values from - infinity to positive 5.
Y can take values from -2 to positive infinity.
but since X>Y
X can take values, 5,4,3,2,1,0
and y can take only -2 and -1 ( as -1 is smaller than 0)
so the prime number will be 5 +(-2) = 3
let me know if my understanding is right.
GMAT/MBA Expert
- Ian Stewart
- GMAT Instructor
- Posts: 2621
- Joined: Mon Jun 02, 2008 3:17 am
- Location: Montreal
- Thanked: 1090 times
- Followed by:355 members
- GMAT Score:780
tzink has the right idea above- the question doesn't tell you that x and y are integers. So, x could be 5.6 and y could be 5.4, and x+y could be 11.