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Manager  Joined: 26 Sep 2007
Posts: 57
If S = {2, 3, x, y}, what is the value of x + y?  [#permalink]

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Question Stats: 86% (00:33) correct 14% (00:42) wrong based on 229 sessions

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If S = {2, 3, x, y}, what is the value of x + y?

(1) x and y are prime numbers.
(2) 3, x, and y are consecutive odd integers in ascending order.
SVP  Joined: 29 Mar 2007
Posts: 2333

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sevenplus wrote:
6. If S = {2, 3, x, y}, what is the value of x + y?
(1) x and y are prime numbers.
(2) 3, x, and y are consecutive odd integers in ascending order.

1) x and y could be any of the primes. Insuff.

2) 3, 5, 7... odd consec integers in ascending order. Since they are consecutive we cant have 3, 9, 11, etc...

must be 3, 5, 7. 5+7=12. Suff.

Am i missing somethin really basic?

owell i say B.
Director  Joined: 22 Aug 2007
Posts: 515

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sevenplus wrote:
6. If S = {2, 3, x, y}, what is the value of x + y?
(1) x and y are prime numbers.
(2) 3, x, and y are consecutive odd integers in ascending order.

ok, it is B,

1) INSUFF
2) SUFF

3,5,7----> consequtive odd intengers

sorry for so many corrections...

Originally posted by IrinaOK on 26 Nov 2007, 18:23.
Last edited by IrinaOK on 26 Nov 2007, 19:03, edited 4 times in total.
VP  Joined: 09 Jul 2007
Posts: 1011
Location: London

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sevenplus wrote:
6. If S = {2, 3, x, y}, what is the value of x + y?
(1) x and y are prime numbers.
(2) 3, x, and y are consecutive odd integers in ascending order.

in 2 can 3, 7 and 9 be a consecutive odd integers in ascending order?
Manager  Joined: 26 Sep 2007
Posts: 57

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GMATBLACKBELT wrote:
sevenplus wrote:
6. If S = {2, 3, x, y}, what is the value of x + y?
(1) x and y are prime numbers.
(2) 3, x, and y are consecutive odd integers in ascending order.

1) x and y could be any of the primes. Insuff.

2) 3, 5, 7... odd consec integers in ascending order. Since they are consecutive we cant have 3, 9, 11, etc...

must be 3, 5, 7. 5+7=12. Suff.

Am i missing somethin really basic?

owell i say B.

Why can't we have -1, 1 and 3 instead of 3,5 and 7.
Senior Manager  Joined: 06 Aug 2007
Posts: 299

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sevenplus wrote:
GMATBLACKBELT wrote:
sevenplus wrote:
6. If S = {2, 3, x, y}, what is the value of x + y?
(1) x and y are prime numbers.
(2) 3, x, and y are consecutive odd integers in ascending order.

1) x and y could be any of the primes. Insuff.

2) 3, 5, 7... odd consec integers in ascending order. Since they are consecutive we cant have 3, 9, 11, etc...

must be 3, 5, 7. 5+7=12. Suff.

Am i missing somethin really basic?

owell i say B.

Why can't we have -1, 1 and 3 instead of 3,5 and 7.

Because the question says:

3, x, and y are consecutive odd integers in ascending order
Manager  Joined: 26 Sep 2007
Posts: 57

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spider wrote:
sevenplus wrote:
GMATBLACKBELT wrote:
sevenplus wrote:
6. If S = {2, 3, x, y}, what is the value of x + y?
(1) x and y are prime numbers.
(2) 3, x, and y are consecutive odd integers in ascending order.

1) x and y could be any of the primes. Insuff.

2) 3, 5, 7... odd consec integers in ascending order. Since they are consecutive we cant have 3, 9, 11, etc...

must be 3, 5, 7. 5+7=12. Suff.

Am i missing somethin really basic?

owell i say B.

Why can't we have -1, 1 and 3 instead of 3,5 and 7.

Because the question says:

3, x, and y are consecutive odd integers in ascending order

Question doesn't say 3<x<y, so it can be -1, 1 and 3 as well as 3, 5 and 7
Anyway, OA is B.
Director  Joined: 22 Aug 2007
Posts: 515

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No, but you have a point there..

-1,1,3-------> ascending consecutive odd intengers
3,5,7---------> ascending consecutive odd intengers

the asnwer should be C

SVP  Joined: 29 Mar 2007
Posts: 2333

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Haha, should do this more often. Throw a few easy ones in there to confuse the hell out of us .
Director  Joined: 22 Aug 2007
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GMATBLACKBELT wrote:
Haha, should do this more often. Throw a few easy ones in there to confuse the hell out of us .

yes, but it is very confusing when there is no written rule for why we should accept one alternative over another.

In this case, what makes 3,5,7 better possibility than -1,1,3 ?

-1,1,3-------> ascending consecutive odd intengers
3,5,7---------> ascending consecutive odd intengers

I wonder if 2nd statement is written correctly, i mean if said

'numbers in S are in ascending order and .....', B would make sense
SVP  Joined: 06 Sep 2013
Posts: 1652
Concentration: Finance
Re: If S = {2, 3, x, y}, what is the value of x + y? (1) x and y  [#permalink]

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sevenplus wrote:
6. If S = {2, 3, x, y}, what is the value of x + y?
(1) x and y are prime numbers.
(2) 3, x, and y are consecutive odd integers in ascending order.

Chose (C) but i'm afraid I might be wrong since I've read many of you chose (B)
My reasoning? 3,x, and y are consecutive odd integers in ascending order. When they say in ascending order do they mean literally in the same order as they state them (3,x, and y) or just in ascending order but could be x,3,y or 3,x,y etc...? For me it isn't clear but what do you guys think?
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Joined: 02 Sep 2009
Posts: 55609
Re: If S = {2, 3, x, y}, what is the value of x + y? (1) x and y  [#permalink]

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jlgdr wrote:
sevenplus wrote:
6. If S = {2, 3, x, y}, what is the value of x + y?
(1) x and y are prime numbers.
(2) 3, x, and y are consecutive odd integers in ascending order.

Chose (C) but i'm afraid I might be wrong since I've read many of you chose (B)
My reasoning? 3,x, and y are consecutive odd integers in ascending order. When they say in ascending order do they mean literally in the same order as they state them (3,x, and y) or just in ascending order but could be x,3,y or 3,x,y etc...? For me it isn't clear but what do you guys think?

We are told that 3, x, and y are consecutive odd integers in ascending order.
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Director  V
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Re: If S = {2, 3, x, y}, what is the value of x + y?  [#permalink]

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My guess is left to right shows ascending or descending order

3, 5, 7 here ascending
3, 1, -1 here descending

so when it says 3, y and z are consecutive odd integers in ascending order then y and z must be 5 and 7 because if it was 3, 1 and -1 then it would become descending.
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- Stne
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Joined: 02 Sep 2009
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Re: If S = {2, 3, x, y}, what is the value of x + y?  [#permalink]

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stne wrote:
My guess is left to right shows ascending or descending order

3, 5, 7 here ascending
3, 1, -1 here descending

so when it says 3, y and z are consecutive odd integers in ascending order then y and z must be 5 and 7 because if it was 3, 1 and -1 then it would become descending.

______
Absolutely.
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Re: If S = {2, 3, x, y}, what is the value of x + y?  [#permalink]

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Bunuel wrote:
stne wrote:
My guess is left to right shows ascending or descending order

3, 5, 7 here ascending
3, 1, -1 here descending

so when it says 3, y and z are consecutive odd integers in ascending order then y and z must be 5 and 7 because if it was 3, 1 and -1 then it would become descending.

______
Absolutely.

OK this is now clear. Thanks guys
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If S = {2, 3, x, y}, what is the value of x + y?  [#permalink]

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Project DS Butler: Day 57: Data Sufficiency (DS113)

If S = {2, 3, x, y}, what is the value of x + y?

(1) x and y are prime numbers.

(2) 3, x, and y are consecutive odd integers in ascending order
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Re: If S = {2, 3, x, y}, what is the value of x + y?  [#permalink]

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gmatbusters wrote:

Project DS Butler: Day 57: Data Sufficiency (DS113)

If S = {2, 3, x, y}, what is the value of x + y?
(1) x and y are prime numbers.
(2) 3, x, and y are consecutive odd integers in ascending
order

statement 1: no specific value of x and y. Not sufficient .

Statement 2: ascending order . consecutive odd. x= 5 y=7.

x + y = 5 + 7 = 12.

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Joined: 08 Sep 2018
Posts: 22
Location: United States
GMAT 1: 640 Q44 V33 Re: If S = {2, 3, x, y}, what is the value of x + y?  [#permalink]

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I think C?

Statement 1 = prime numbers = insufficient.

Statement 2 = The way I read the problem is 3, x, and Y are consecutive Odd integers in ascending order. Which means that the set can be

1, 3, 5 or 3, 5 7. If this is the case then statement 2 is insufficient.

If we take both statements combined, then 3, 5, 7 are the only consecutive odd integers in ascending order and still prime.
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Re: If S = {2, 3, x, y}, what is the value of x + y?  [#permalink]

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gmatbusters wrote:

Project DS Butler: Day 57: Data Sufficiency (DS113)

If S = {2, 3, x, y}, what is the value of x + y?
(1) x and y are prime numbers.
(2) 3, x, and y are consecutive odd integers in ascending
order

# 1:
x,y : can be any no so in sufficient

#2:
3,x,y are consective odd integers in ascending order so x,5,y 7

sufficient

IMO B
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Re: If S = {2, 3, x, y}, what is the value of x + y?  [#permalink]

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gmatbusters wrote:

Project DS Butler: Day 57: Data Sufficiency (DS113)

If S = {2, 3, x, y}, what is the value of x + y?
(1) x and y are prime numbers.
(2) 3, x, and y are consecutive odd integers in ascending
order

Statement 1: x and y are prime numbers
Possibility 1: S = {2,3,2,3} ---> Sum = 2+3 = 5 .....(since we are not told whether the set has distinct integers or different ones)
Possibility 2: S = {2,3,5,7} ---> Sum = 5+7 = 12
More than 1 possibility.
Insufficient.

Statement 2: 3, x, and y are consecutive odd integers in ascending order.
Possibility 1: S = {2,3,5,7} ---> Sum = 5+7 = 12
There can be only 1 possibility of "consecutive odd integers in ascending order".
Sufficient.

Hence, option B.
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We grow infinitely when we share. Re: If S = {2, 3, x, y}, what is the value of x + y?   [#permalink] 02 Jan 2019, 02:39

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