GMAT PREP.........

[smclean23]

Does set S contain any even numbers?


1) There are no prime numbers in S.

2) There are no multiples of 4 in S.



OA is E.................

[vivek.kapoor83]

1) There are no prime numbers in S.
Take the values of S = 3,4,5,6 ...Insuff

) There are no multiples of 4 in S.
- if u take this statement then it can be any value - 6,5 so Insuff
now taking together

S can hv values - 6 - even( Not prime, not multiple of 4) -EVEN
or 9 ( Not prime , not multiple of 4) - ODD

So, Insuff
Hence E

[vivek.kapoor83]

1) There are no prime numbers in S.
Take the values of S = 4,9...Insuff

) There are no multiples of 4 in S.
- if u take this statement then it can be any value - 6,5 so Insuff
now taking together

S can hv values - 6 - even( Not prime, not multiple of 4) -EVEN
or 9 ( Not prime , not multiple of 4) - ODD

So, Insuff
Hence E

[vivek.kapoor83]

1) There are no prime numbers in S.
Take the values of S = ,4,9 ...Insuff

) There are no multiples of 4 in S.
- if u take this statement then it can be any value - 6,5 so Insuff
now taking together

S can hv values - 6 - even( Not prime, not multiple of 4) -EVEN
or 9 ( Not prime , not multiple of 4) - ODD

So, Insuff
Hence E

[maihuna]

Kapoor saheb how u can choose ... 3 4 5 6 as non primes...3 and 5 are prime...

See no number picking is required here: DO the following:
1. Contains no prime...can be any even no except 2
2. no multiples of 4...can be all odd multiple of 2 i.e. 2 6 10 etc..

so E..

1) There are no prime numbers in S.
Take the values of S = 3,4,5,6 ...Insuff

) There are no multiples of 4 in S.
- if u take this statement then it can be any value - 6,5 so Insuff
now taking together

S can hv values - 6 - even( Not prime, not multiple of 4) -EVEN
or 9 ( Not prime , not multiple of 4) - ODD

So, Insuff
Hence E

[vikz_316]

Hello,

I have a doubt regarding these type of q's

Set S has not been defined here..
For all I know, Set S could be the set of all fractions, or Set S could be the set of all integers, as is assumed here.

Moreover the info provided tells us what is NOT there.

So is it wise to just mark the answer E, as we have no idea what kind of values are actually allowed inside the Set S.

[vikz_316]

never mind, i got my ass out of my head and realized how trivial my argument was. wonderful what time away from the computer can do to your brain sometimes.
For those who I did manage to confuse, I am sorry. If it can be proved that under no circumstances can the set S have Even numbers, the arguments can become sufficient.