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Difficulty:
65%
(hard)
Question Stats:
45% (01:29) correct
55%
(01:28)
wrong
based on 121
sessions
History
Date
Time
Result
Not Attempted Yet
Is q prime?
(1) q is between 115 and 125
(2) q + 1 is not prime.
_________________
(1) q is between 115 and 125
(2) q + 1 is not prime.
Pure algebraic questions like this one are no longer part of the GMAT Data Sufficiency syllabus.
For relevant Data Sufficiency questions, please check the Data Sufficiency forum:
Data Sufficiency Forum
Data Sufficiency Forum
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Posts: 17
1. Sufficient . only possible value is 119
2. Not sufficient.
Ans = (A)
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2. Not sufficient.
Ans = (A)
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A...
1) only value is 123
2)not sufficent.
Notice:119 is divisible by 7
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1) only value is 123
2)not sufficent.
Notice:119 is divisible by 7
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Posts: 5
123 is divisible by 3
A is sufficient to answer this question.
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A is sufficient to answer this question.
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Posts: 17
Oops sorry there is no prime number between 115 and 125 .. basically I did everything wrong and still got the correct ans
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Posts: 21
A) Sufficient with answer as NO. There is no prime in this range.
B) for all q Prime's q+1 will always be NOT Prime
Omkar Kamat
When The Going Gets Tough, The Tough Gets Going !!
B) for all q Prime's q+1 will always be NOT Prime
Omkar Kamat
When The Going Gets Tough, The Tough Gets Going !!
A) Sufficient as there is NO prime between 115 and 125
B) Insufficient as q can be prime or not prime if q+1 is Not prime
Ex. Let q=27, then q+1=28 so both q and q+1 are Not prime
Now let q=29, so q+1=30, here q is prime and q+1 is Not prime
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B) Insufficient as q can be prime or not prime if q+1 is Not prime
Ex. Let q=27, then q+1=28 so both q and q+1 are Not prime
Now let q=29, so q+1=30, here q is prime and q+1 is Not prime
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Alexey1989x
Joined: 05 Dec 2016
Last visit: 20 May 2023
Posts: 185
Concentration: Strategy, Finance
GMAT 1: 620 Q46 V29
GMAT 1: 620 Q46 V29
Posts: 185
Answer A
(1) provides us with clear understanding that any number from the given range NEVER can be prime.
(1) provides us with clear understanding that any number from the given range NEVER can be prime.
Sirakri
Current Student
Joined: 11 Oct 2015
Last visit: 13 Jul 2023
Posts: 104
Status:Preparing for GMAT!!
Location: India
Concentration: Entrepreneurship, International Business
GMAT 1: 660 Q47 V34
GMAT 2: 700 Q48 V38
GPA: 3.1
WE:General Management (Media/Entertainment)
GMAT 2: 700 Q48 V38
Posts: 104
Bunuel
1) No primes btw 115 & 125 => No => Sufficient
2) 2,3 & 14,15 => Yes and No => Not sufficient
A
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