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

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

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New post 26 Nov 2007, 18:19
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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.
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Re: DS Numbers  [#permalink]

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New post 26 Nov 2007, 18:21
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.
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Re: DS Numbers  [#permalink]

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New post Updated on: 26 Nov 2007, 19:03
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.
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Re: DS Numbers  [#permalink]

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New post 26 Nov 2007, 18:25
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?
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Re: DS Numbers  [#permalink]

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New post 26 Nov 2007, 18:26
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.
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Re: DS Numbers  [#permalink]

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New post 26 Nov 2007, 20:01
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
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Re: DS Numbers  [#permalink]

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New post 26 Nov 2007, 20:34
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.
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Re: DS Numbers  [#permalink]

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New post 26 Nov 2007, 20:42
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

any comments?? plzz
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New post 26 Nov 2007, 20:45
Haha, should do this more often. Throw a few easy ones in there to confuse the hell out of us :P.
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New post 26 Nov 2007, 20:51
GMATBLACKBELT wrote:
Haha, should do this more often. Throw a few easy ones in there to confuse the hell out of us :P.


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
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Re: If S = {2, 3, x, y}, what is the value of x + y? (1) x and y  [#permalink]

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New post 06 Oct 2013, 09:27
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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Re: If S = {2, 3, x, y}, what is the value of x + y? (1) x and y  [#permalink]

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New post 06 Oct 2013, 09:39
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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?


The correct answer is B.

We are told that 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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New post 20 Feb 2014, 07:27
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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Re: If S = {2, 3, x, y}, what is the value of x + y?  [#permalink]

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

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New post 20 Feb 2014, 08:16
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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New post 01 Jan 2019, 07:39
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Project DS Butler: Day 57: Data Sufficiency (DS113)


For DS butler Questions Click Here


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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New post 01 Jan 2019, 10:58
gmatbusters wrote:

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


For DS butler Questions Click Here


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.

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

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New post 01 Jan 2019, 11:36
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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New post 01 Jan 2019, 12:49
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gmatbusters wrote:

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


For DS butler Questions Click Here


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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New post 02 Jan 2019, 02:39
gmatbusters wrote:

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


For DS butler Questions Click Here


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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Re: If S = {2, 3, x, y}, what is the value of x + y?   [#permalink] 02 Jan 2019, 02:39

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