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Is n prime?
[#permalink]
21 May 2017, 11:32
21 May 2017, 11:32
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A
B
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E
Difficulty:
35%
(medium)
Question Stats:
64% (00:59) correct
36%
(00:37)
wrong
based on 88
sessions
Is n prime?
[#permalink]
Updated on: 22 May 2017, 10:35
Updated on: 22 May 2017, 10:35
Consider statement 1 :
Between 1 and 4 there are 2 no: that are 2 & 3 - both are prime no: .
It can also have no: such as 3/2 , 4/3 - not prime no: . Not Sufficient
Consider statement 2 :
n^2 − 5n + 6 = 0
After simplifying the equation we get the vale of n as 2 & 3 - both are prime no: . Sufficient
Therefore option B is the answer.
Between 1 and 4 there are 2 no: that are 2 & 3 - both are prime no: .
It can also have no: such as 3/2 , 4/3 - not prime no: . Not Sufficient
Consider statement 2 :
n^2 − 5n + 6 = 0
After simplifying the equation we get the vale of n as 2 & 3 - both are prime no: . Sufficient
Therefore option B is the answer.
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Re: Is n prime?
[#permalink]
21 May 2017, 22:55
21 May 2017, 22:55
1
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Bunuel
Is n prime?
(1) n is between 1 and 4.
(2) n^2 − 5n + 6 = 0
(1) n is between 1 and 4.
(2) n^2 − 5n + 6 = 0
Stmt 1 : Doesn't mention if n is an integer, hence can be a fraction as well. As fractions can't be Prime, hence Not Sufficient.
Stmt 2 : Roots are 2 and 3, both of which are Prime. Hence sufficient.
Should be B.
