If x is a prime number, what is the value of x ? (1) x

If x is a prime number, what is the value of x ? (1) x <

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If x is a prime number, what is the value of x ? (1) x < [#permalink]

22 Oct 2006, 12:47

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If x is a prime number, what is the value of x ?

(1) x < 15
(2) (x - 2) is a multiple of of 5

OA is E.

Are'nt the 2 statement taken together suff.

1 and 2 should yield 7 for answer.

Where am I getting it wrong ?

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Re: DS prime number [#permalink]

22 Oct 2006, 12:51

vmalaiya wrote:

x=2 works as well

... x-2 = 0 is also a multiple of 5

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22 Oct 2006, 13:31

If x is a prime number, what is the value of x ?

(1) x < 15
(2) (x - 2) is a multiple of of 5

fro one

x belongs to { 2,3,5,7,11,13}...insuff

from two

x = 5k+2
k is odd or zero

x could = 2 or 7 17.......insuff

both together

x could be 2 or 7....insuff my answer is E

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22 Oct 2006, 16:59

Should we consider negatibe nos. for prime. eg. -3

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22 Oct 2006, 17:06

GMAT SEE PRIMES AS PSOITIVE ONLY ..........SURE

[#permalink] 22 Oct 2006, 17:06

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If x is a prime number, what is the value of x ? (1) x <

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If x is a prime number, what is the value of x ? (1) x <

If x is a prime number, what is the value of x ? (1) x <

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