If p^3 >=-125, and p is an integer, what is the value of p ?
(1) 3p + 16 ≤ 4
(2) p^2 > 16
Good luck !
An interesting question with an interesting answer!
This topic has expert replies
-
- Junior | Next Rank: 30 Posts
- Posts: 29
- Joined: Mon Mar 09, 2009 6:39 am
- asamaverick
- Master | Next Rank: 500 Posts
- Posts: 106
- Joined: Mon Sep 28, 2009 9:29 am
- Location: Boston, MA
- Thanked: 26 times
- Followed by:2 members
- GMAT Score:700
(B) Statement 2 alone should be sufficient.
-
- Legendary Member
- Posts: 882
- Joined: Fri Feb 20, 2009 2:57 pm
- Thanked: 15 times
- Followed by:1 members
- GMAT Score:690
From the question stem we get p >= -5
statement 1: P<= -4 , so p can be either -4 or - 5 => insufficient
statement 2 p<-4 or p>4, so p can be either -5 or any integer greater than 4 (4 is excluded ) - insufficient.
If we combine the statements we get that p is -4 or -5 (statement 1) and p less (but not equal) to 4. So the correct answer, I assume, should b C -> p can be only -5 if we combine the 2 statements together
So -> C
statement 1: P<= -4 , so p can be either -4 or - 5 => insufficient
statement 2 p<-4 or p>4, so p can be either -5 or any integer greater than 4 (4 is excluded ) - insufficient.
If we combine the statements we get that p is -4 or -5 (statement 1) and p less (but not equal) to 4. So the correct answer, I assume, should b C -> p can be only -5 if we combine the 2 statements together
So -> C
-
- Legendary Member
- Posts: 882
- Joined: Fri Feb 20, 2009 2:57 pm
- Thanked: 15 times
- Followed by:1 members
- GMAT Score:690
B is sufficient. p cannot be greater than 4 as question stem states - If p^3 >=-125...bullzeye wrote:From the question stem we get p >= -5
statement 1: P<= -4 , so p can be either -4 or - 5 => insufficient
statement 2 p<-4 or p>4, so p can be either -5 or any integer greater than 4 (4 is excluded ) - insufficient.
If we combine the statements we get that p is -4 or -5 (statement 1) and p less (but not equal) to 4. So the correct answer, I assume, should b C -> p can be only -5 if we combine the 2 statements together
So -> C
-
- Legendary Member
- Posts: 1161
- Joined: Mon May 12, 2008 2:52 am
- Location: Sydney
- Thanked: 23 times
- Followed by:1 members
Sorry but can you explain why p cannot be greater than 4?
from the question stem: p >= -5
and 4 >= -5 is true
from the question stem: p >= -5
and 4 >= -5 is true
crackgmat007 wrote:B is sufficient. p cannot be greater than 4 as question stem states - If p^3 >=-125...bullzeye wrote:From the question stem we get p >= -5
statement 1: P<= -4 , so p can be either -4 or - 5 => insufficient
statement 2 p<-4 or p>4, so p can be either -5 or any integer greater than 4 (4 is excluded ) - insufficient.
If we combine the statements we get that p is -4 or -5 (statement 1) and p less (but not equal) to 4. So the correct answer, I assume, should b C -> p can be only -5 if we combine the 2 statements together
So -> C
It has to be C.
What's the OA ??bullzeye wrote:
From the question stem we get p >= -5
statement 1: P<= -4 , so p can be either -4 or - 5 => insufficient
statement 2 p<-4 or p>4, so p can be either -5 or any integer greater than 4 (4 is excluded ) - insufficient.
If we combine the statements we get that p is -4 or -5 (statement 1) and p less (but not equal) to 4. So the correct answer, I assume, should b C -> p can be only -5 if we combine the 2 statements together
So -> C
-
- Senior | Next Rank: 100 Posts
- Posts: 43
- Joined: Tue Oct 13, 2009 3:31 pm
p > -5EbrahimHashem wrote:If p^3 >=-125, and p is an integer, what is the value of p ?
(1) 3p + 16 ≤ 4
(2) p^2 > 16
Good luck !
(1) p < -4, x could be -5 or -4
(2)-4 > p or p > 4. I don't get either why everyone automatically excludes p>4. It seems to me that p>4 is also a solution set to p>-5
(-4)^3 = -64 which is bigger than -125...crackgmat007 wrote:B is sufficient. p cannot be greater than 4 as question stem states - If p^3 >=-125...bullzeye wrote:From the question stem we get p >= -5
statement 1: P<= -4 , so p can be either -4 or - 5 => insufficient
statement 2 p<-4 or p>4, so p can be either -5 or any integer greater than 4 (4 is excluded ) - insufficient.
If we combine the statements we get that p is -4 or -5 (statement 1) and p less (but not equal) to 4. So the correct answer, I assume, should b C -> p can be only -5 if we combine the 2 statements together
So -> C
I agree on C.