It is currently 17 Oct 2017, 21:20

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# A set of numbers has the property that for any number t in

Author Message
Manager
Joined: 16 Oct 2008
Posts: 54

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

A set of numbers has the property that for any number t in [#permalink]

### Show Tags

30 Oct 2008, 00:25
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

A set of numbers has the property that for any number t in the set, t + 2 is in the set. If –1 is in the set, which of the following must also be in the set?

I. -3
II. 1
III. 5

A. I only
B. II only
C. I and II only
D. II and III only
E. I, II, and III

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

SVP
Joined: 17 Jun 2008
Posts: 1535

Kudos [?]: 279 [0], given: 0

### Show Tags

30 Oct 2008, 01:36
D.
If -1 is in the set, so will 1 be.
If 1 is in the set, so will 3 be.
If 3 is in the set, so will 5 be.

Kudos [?]: 279 [0], given: 0

Intern
Joined: 09 May 2008
Posts: 12

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

Location: Trieste, Italy

### Show Tags

30 Oct 2008, 01:45
scthakur wrote:
D.
If -1 is in the set, so will 1 be.
If 1 is in the set, so will 3 be.
If 3 is in the set, so will 5 be.

We don't know wheter t=-1 or t+2=-1.
So I'd go for E (the sequence being -3, -1, 1, 3, 5)

OA?

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

Intern
Joined: 09 May 2008
Posts: 12

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

Location: Trieste, Italy

### Show Tags

30 Oct 2008, 02:35
These are the GMAT tricks that I'll never understand (and that I find unfair, btw)

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

Manager
Joined: 12 Oct 2008
Posts: 104

Kudos [?]: 10 [0], given: 0

### Show Tags

30 Oct 2008, 11:16
still ,I don't understand why it is D and not E

Kudos [?]: 10 [0], given: 0

SVP
Joined: 05 Jul 2006
Posts: 1750

Kudos [?]: 430 [0], given: 49

### Show Tags

30 Oct 2008, 13:17
linau1982 wrote:
still ,I don't understand why it is D and not E

WE CANt GO BACKWARDS LOGIC....D

WE CANT DEDUCT THAT IF (T+2) IS IN THE SET THEN T IS IN THE SET.

Kudos [?]: 430 [0], given: 49

Re: No. prop Q   [#permalink] 30 Oct 2008, 13:17
Display posts from previous: Sort by