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03 Sep 2019, 23:01
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C
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Difficulty:
15%
(low)
Question Stats:
78% (00:52) correct
22%
(00:46)
wrong
based on 140
sessions
History
Date
Time
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Not Attempted Yet
What is the value of x^5?
(1) x^2 = 9
(2) x^3 >9
Updated on: 05 Sep 2019, 01:03
Originally posted by Archit3110 on 03 Sep 2019, 23:34.
Last edited by Archit3110 on 05 Sep 2019, 01:03, edited 1 time in total.
Last edited by Archit3110 on 05 Sep 2019, 01:03, edited 1 time in total.
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What is the value of x^5?
(1) x^2 = 9
(2) x^3 >9
#1
x=+/-3 value of x^5 would vary insufficient
#2
x^3>9 ; x>2 so it can be 3,4,5,.... so x^5 value would vary insufficient
from 1 &2
we can determine that x =3..
IMO C
(1) x^2 = 9
(2) x^3 >9
#1
x=+/-3 value of x^5 would vary insufficient
#2
x^3>9 ; x>2 so it can be 3,4,5,.... so x^5 value would vary insufficient
from 1 &2
we can determine that x =3..
IMO C
anbknaga
Joined: 27 Aug 2018
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Concentration: Operations, Healthcare
Schools: ISB '21 (D) Great Lakes '21 (WD)
GMAT 1: 650 Q48 V31
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03 Sep 2019, 23:34
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What is the value of \(x^5\)?
(1)\(x^2\) = 9
(2) \(x^3\) >9
Statement 1: \(x^2\) = 9
=> |x| = 3
=> x= 3 or x =-3. Therefore \(x^5\) value will differ for x=3 and x = -3. Hence NOT SUFFICIENT
AD/BCE
Statement 2: \(x^3\) >9
From this statement, we can say that x = positive since \(x^3\) must be an even number.
Also, x can be anything more than 2. i.e, x>2 . x can take any number, so Statement 2 is also NOT SUFFICIENT.
AD/BCE
Statement 1 and Statement 2 together:
From statement 2 we know that x is positive and from statement 1, the only value x can take is x = 3.
Therefore we can find a unique value for \(x^5\).
hence SUFFICIENT.
The answer is C
(1)\(x^2\) = 9
(2) \(x^3\) >9
Statement 1: \(x^2\) = 9
=> |x| = 3
=> x= 3 or x =-3. Therefore \(x^5\) value will differ for x=3 and x = -3. Hence NOT SUFFICIENT
Statement 2: \(x^3\) >9
From this statement, we can say that x = positive since \(x^3\) must be an even number.
Also, x can be anything more than 2. i.e, x>2 . x can take any number, so Statement 2 is also NOT SUFFICIENT.
Statement 1 and Statement 2 together:
From statement 2 we know that x is positive and from statement 1, the only value x can take is x = 3.
Therefore we can find a unique value for \(x^5\).
hence SUFFICIENT.
The answer is C
