• 1 Hour Free
BEAT THE GMAT EXCLUSIVE

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

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

Available with Beat the GMAT members only code

• Get 300+ Practice Questions

Available with Beat the GMAT members only code

• Most awarded test prep in the world
Now free for 30 days

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

• Magoosh
Study with Magoosh GMAT prep

Available with Beat the GMAT members only code

• 5 Day FREE Trial
Study Smarter, Not Harder

Available with Beat the GMAT members only code

• Free Trial & Practice Exam
BEAT THE GMAT EXCLUSIVE

Available with Beat the GMAT members only code

## Number Properties Question

This topic has 1 member reply
rnschmidt Newbie | Next Rank: 10 Posts
Joined
07 Nov 2006
Posted:
9 messages

#### Number Properties Question

Mon Apr 30, 2007 5:08 pm
If a, b, c, d and e are integers and p = (2^a)(3^b) and q = (2^c)(3^d)(5^e), is p/q a terminating decimal?

(1) a > c
(2) b > d

jayhawk2001 Community Manager
Joined
28 Jan 2007
Posted:
789 messages
Followed by:
1 members
30
Mon Apr 30, 2007 8:53 pm
rnschmidt wrote:
If a, b, c, d and e are integers and p = (2^a)(3^b) and q = (2^c)(3^d)(5^e), is p/q a terminating decimal?

(1) a > c
(2) b > d
p/q = 2^(a-c)*3(b-d) / 5^e

The only way we can get a recurring decimal is when we have 3 in
the denominator as 1/(3*5) is recurring.

3 can go to the denominator when b < d

1 - insufficient. If b > d, it is terminating. If b < d, it is non terminating

2 - sufficient. b > d implies 3 is in the numerator and so the end
fraction is non-terminating.

Hence B

### Best Conversation Starters

1 lheiannie07 108 topics
2 ardz24 67 topics
3 Roland2rule 63 topics
4 LUANDATO 50 topics
5 swerve 43 topics
See More Top Beat The GMAT Members...

### Most Active Experts

1 GMATGuruNY

The Princeton Review Teacher

152 posts
2 Jeff@TargetTestPrep

Target Test Prep

106 posts
3 Rich.C@EMPOWERgma...

EMPOWERgmat

103 posts
4 Scott@TargetTestPrep

Target Test Prep

96 posts
5 Max@Math Revolution

Math Revolution

86 posts
See More Top Beat The GMAT Experts