• 5-Day Free Trial
5-day free, full-access trial TTP Quant

Available with Beat the GMAT members only code

• Free Trial & Practice Exam
BEAT THE GMAT EXCLUSIVE

Available with Beat the GMAT members only code

• 5 Day FREE Trial
Study Smarter, Not Harder

Available with Beat the GMAT members only code

• Get 300+ Practice Questions

Available with Beat the GMAT members only code

• Magoosh
Study with Magoosh GMAT prep

Available with Beat the GMAT members only code

• Award-winning private GMAT tutoring
Register now and save up to \$200

Available with Beat the GMAT members only code

• Free Practice Test & Review
How would you score if you took the GMAT

Available with Beat the GMAT members only code

• Free Veritas GMAT Class
Experience Lesson 1 Live Free

Available with Beat the GMAT members only code

• 1 Hour Free
BEAT THE GMAT EXCLUSIVE

Available with Beat the GMAT members only code

## In DS, how x>5 satisfies "is x>0"?

This topic has 2 expert replies and 1 member reply
akshat.pant3@gmail.com Newbie | Next Rank: 10 Posts
Joined
23 Oct 2014
Posted:
5 messages

#### In DS, how x>5 satisfies "is x>0"?

Fri Sep 18, 2015 8:46 am
how x>5 satisfies "is x>0"?

x>0 is-
Besides x is positive, x>0 also mean x could be 1/2, 1 ,2,3, 5, 100.

But x>5 means x could only be anything greater than 5, i.e. 5.5, 6, 10, but not 1, 2,3, 4.

So how does x>5 satisfies "is x>0"? (It was in one of the Beat the GMAT videos)

Need free GMAT or MBA advice from an expert? Register for Beat The GMAT now and post your question in these forums!

### GMAT/MBA Expert

Rich.C@EMPOWERgmat.com Elite Legendary Member
Joined
23 Jun 2013
Posted:
8699 messages
Followed by:
460 members
Thanked:
2729 times
GMAT Score:
800
Fri Sep 18, 2015 9:13 am
Hi akshat.pant3,

The answer to a DS question is based on the 'consistency' of the resulst. A 'sufficient' Fact is one that gives you enough information to lead to a consistent result/answer.

As an example....
If a DS question asks "Is X > 0?", then THAT question is what we have to 'measure' our work against...

1) X^2 = 36

Here, X could be two different values: 6 or -6. With "6", the answer to the question is YES. With "-6", the answer to the question is NO. Those answers are INCONSISTENT, so Fact 1 is insufficient.

2) X > 5

Here, we know that X MUST be greater than 5, so regardless of what value(s) you make X, they are ALL greater than 0, so the answer to the question is ALWAYS YES and Fact 2 is sufficient.

GMAT assassins aren't born, they're made,
Rich

_________________
Contact Rich at Rich.C@empowergmat.com

akshat.pant3@gmail.com Newbie | Next Rank: 10 Posts
Joined
23 Oct 2014
Posted:
5 messages
Sun Sep 20, 2015 3:02 am
Rich.C@EMPOWERgmat.com wrote:
Hi akshat.pant3,

The answer to a DS question is based on the 'consistency' of the resulst. A 'sufficient' Fact is one that gives you enough information to lead to a consistent result/answer.

As an example....
If a DS question asks "Is X > 0?", then THAT question is what we have to 'measure' our work against...

1) X^2 = 36

Here, X could be two different values: 6 or -6. With "6", the answer to the question is YES. With "-6", the answer to the question is NO. Those answers are INCONSISTENT, so Fact 1 is insufficient.

2) X > 5

Here, we know that X MUST be greater than 5, so regardless of what value(s) you make X, they are ALL greater than 0, so the answer to the question is ALWAYS YES and Fact 2 is sufficient.

GMAT assassins aren't born, they're made,
Rich
Yes, I got it till that point. However, where I'm confused is:
If x>0 then x can be 1,2,3,4,5 and also 6,7..
But x>5 only satisfies 6,7...but cannot satisfy if x=1,2,3,4,5

### GMAT/MBA Expert

Rich.C@EMPOWERgmat.com Elite Legendary Member
Joined
23 Jun 2013
Posted:
8699 messages
Followed by:
460 members
Thanked:
2729 times
GMAT Score:
800
Sun Sep 20, 2015 9:25 am
Hi akshat.pant3,

You have to differentiate between the QUESTION that is asked and the INFORMATION that you're given.

If a question asks "Is X > 0?", then that does NOT provide any information - it's just a question. Until you know more about "X", there is no way to answer the question.

Once you learn that X > 5, THEN you can answer the question (and the answer is ALWAYS YES, since any number that is greater than 5 is also greater than 0).

GMAT assassins aren't born, they're made,
Rich

_________________
Contact Rich at Rich.C@empowergmat.com

### Best Conversation Starters

1 Vincen 180 topics
2 lheiannie07 61 topics
3 Roland2rule 54 topics
4 ardz24 44 topics
5 VJesus12 14 topics
See More Top Beat The GMAT Members...

### Most Active Experts

1 Brent@GMATPrepNow

GMAT Prep Now Teacher

155 posts
2 Rich.C@EMPOWERgma...

EMPOWERgmat

105 posts
3 GMATGuruNY

The Princeton Review Teacher

101 posts
4 Jay@ManhattanReview

Manhattan Review

82 posts
5 Matt@VeritasPrep

Veritas Prep

80 posts
See More Top Beat The GMAT Experts