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Soln. Could you please answer? I think (E) should be the answer of this because: Stm (1) alone can not be true. Stm (2) alone also can not be true. Also, both stms together can NOT be true because x can be 4,6,8,10,12,14,...,18 which all of these amounts are NOT prime to satisfy the main question, so (E) would be correct answer. Thanks for your help. Amir

Re: Is the positive integer x a prime number? [#permalink]
12 Jan 2010, 05:02

amirdubai1982 wrote:

Is the positive integer x a prime number?

(1) x is even (2) 2< x < 19

Soln. Could you please answer? I think (E) should be the answer of this because: Stm (1) alone can not be true. Stm (2) alone also can not be true. Also, both stms together can NOT be true because x can be 4,6,8,10,12,14,...,18 which all of these amounts are NOT prime to satisfy the main question, so (E) would be correct answer. Thanks for your help. Amir

Answer would be C.

Its Yes/No question type.

So question stem says Is X prime or not?

Together statement 1 & 2

X could be 4,6,8,10,12,14,...,18 and neither of them is Prime so the answer is NO, X is not prime.

Re: Is the positive integer x a prime number? [#permalink]
20 Jan 2010, 11:22

the soln is C. 1) x is even, this gives a vrey broad range of numbers out of which only 2 is prime, but there is no info on value of x, so its insufficient. 2) 2<x<19even this range has many values and out of which many are prim numbers e.g.3,5,7,11,13,17. so even thats insufficient. but we take both the statements together ; from 1st we know x is even , and 2 is the only even prime number, but @nd gives us the range of x not including 2. so they both together give us a answer.

Re: Is the positive integer x a prime number? [#permalink]
27 Jul 2015, 13:37

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