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# If x is a prime number, what is the value of x? 1. x<15

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Manager
Joined: 21 Mar 2006
Posts: 131
Followers: 1

Kudos [?]: 4 [0], given: 0

If x is a prime number, what is the value of x? 1. x<15 [#permalink]  01 Apr 2006, 21:46
If x is a prime number, what is the value of x?

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

its a data sufficiency so the answer options are the same as always.
_________________

A.P.

Director
Joined: 05 Feb 2006
Posts: 902
Followers: 1

Kudos [?]: 51 [0], given: 0

x can be 2,3,5 or 7

1) statement covers the whole range..... insufficient
2) statement (n-2)/5= interger.... only 7 satisfies this eqation.... sufficient
VP
Joined: 29 Apr 2003
Posts: 1405
Followers: 2

Kudos [?]: 18 [0], given: 0

Firstly:

1. Does not give you the answe

2. (x-2) is a multiple of 5

- ALSO DOES NOT give you any specific answer!

x could be 2, 7, 17.. (0 is a multiple of all numbers!!!). We cannot assume that X is less than 15.

both together also does not work!

So E

Nice Question!
Director
Joined: 05 Feb 2006
Posts: 902
Followers: 1

Kudos [?]: 51 [0], given: 0

Oh yeah it is not necessarilly one digit number

But the answer shoud be C....
Current Student
Joined: 29 Jan 2005
Posts: 5244
Followers: 23

Kudos [?]: 179 [0], given: 0

(C)

Take the two statements together and the answer can only be one number, 7.

Seems like a Kaplan problem....
Manager
Joined: 20 Nov 2004
Posts: 108
Followers: 0

Kudos [?]: 2 [0], given: 0

sm176811 wrote:

You're right. x could also be 2 (besides 7).

Director
Joined: 05 Feb 2006
Posts: 902
Followers: 1

Kudos [?]: 51 [0], given: 0

Cannot be 2 because 0/5 is not defined......
SVP
Joined: 14 Dec 2004
Posts: 1707
Followers: 1

Kudos [?]: 50 [0], given: 0

SimaQ wrote:
Cannot be 2 because 0/5 is not defined......

0/5 is defined, 5/0 is not defined.

It should be "E"
VP
Joined: 28 Mar 2006
Posts: 1384
Followers: 2

Kudos [?]: 19 [0], given: 0

SimaQ wrote:
Cannot be 2 because 0/5 is not defined......

0/anything is 0 but not the other way which is anything/0 which is undefined
Director
Joined: 05 Feb 2006
Posts: 902
Followers: 1

Kudos [?]: 51 [0], given: 0

trivikram wrote:
SimaQ wrote:
Cannot be 2 because 0/5 is not defined......

0/anything is 0 but not the other way which is anything/0 which is undefined

Yep, you are right....

Manager
Joined: 21 Mar 2006
Posts: 131
Followers: 1

Kudos [?]: 4 [0], given: 0

yea the answers E... it might help to know everything is a multiple of 0..
_________________

A.P.

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