GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 24 May 2019, 14:42

### 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

# The product of two numbers is 2028 and their HCF is 13. What are the n

Author Message
Intern
Joined: 19 Dec 2016
Posts: 47
Location: India
WE: Consulting (Computer Software)
The product of two numbers is 2028 and their HCF is 13. What are the n  [#permalink]

### Show Tags

17 Jul 2017, 13:54
1
00:00

Difficulty:

(N/A)

Question Stats:

50% (00:02) correct 50% (00:00) wrong based on 2 sessions

### HideShow timer Statistics

The product of two numbers is 2028 and their HCF is 13. What are the number of such pairs?

A. 4
B. 3
C. 2
D. 1
E. 5

Kudo please if you liked the ques.

--== Message from the GMAT Club Team ==--

THERE IS LIKELY A BETTER DISCUSSION OF THIS EXACT QUESTION.
This discussion does not meet community quality standards. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.

_________________
If you want to appreciate, just click on Kudos.
Senior Manager
Joined: 24 Apr 2016
Posts: 331
Re: The product of two numbers is 2028 and their HCF is 13. What are the n  [#permalink]

### Show Tags

17 Jul 2017, 15:23
Let a*b = 2028

2028 = 13*13*3*2*2

a b
13 13*3*2*2
13*3 13*2*2

Senior SC Moderator
Joined: 22 May 2016
Posts: 2759
The product of two numbers is 2028 and their HCF is 13. What are the n  [#permalink]

### Show Tags

17 Jul 2017, 15:35
GTExl wrote:
The product of two numbers is 2028 and their HCF is 13. What are the number of such pairs?

A. 4
B. 3
C. 2
D. 1
E. 5

Kudo please if you liked the ques.

13 * 156 = 2,028

26 * 78 = 2,028

39 * 52 = 2,028

That's three pairs. I keep testing GCF because OA is two pairs... What am I missing?
_________________
SC Butler has resumed!
Get two SC questions to practice, whose links you can find by date, here.
Senior Manager
Joined: 24 Apr 2016
Posts: 331
Re: The product of two numbers is 2028 and their HCF is 13. What are the n  [#permalink]

### Show Tags

17 Jul 2017, 16:29
1
genxer123 wrote:
GTExl wrote:
The product of two numbers is 2028 and their HCF is 13. What are the number of such pairs?

A. 4
B. 3
C. 2
D. 1
E. 5

Kudo please if you liked the ques.

13 * 156 = 2,028

26 * 78 = 2,028

39 * 52 = 2,028

That's three pairs. I keep testing GCF because OA is two pairs... What am I missing?

13 is the highest common factor. In the combination 26 * 78, HCF is 26. Hence this combination is out.
Senior SC Moderator
Joined: 22 May 2016
Posts: 2759
The product of two numbers is 2028 and their HCF is 13. What are the n  [#permalink]

### Show Tags

17 Jul 2017, 17:08
quantumliner wrote:
genxer123 wrote:
GTExl wrote:
The product of two numbers is 2028 and their HCF is 13. What are the number of such pairs?

A. 4
B. 3
C. 2
D. 1
E. 5

Kudo please if you liked the ques.

13 * 156 = 2,028

26 * 78 = 2,028

39 * 52 = 2,028

That's three pairs. I keep testing GCF because OA is two pairs... What am I missing?

13 is the highest common factor. In the combination 26 * 78, HCF is 26. Hence this combination is out.

Wow, was that a dumb mistake. I factored 78 incorrectly. Thanks, quantumliner

--== Message from the GMAT Club Team ==--

THERE IS LIKELY A BETTER DISCUSSION OF THIS EXACT QUESTION.
This discussion does not meet community quality standards. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.

_________________
SC Butler has resumed!
Get two SC questions to practice, whose links you can find by date, here.
The product of two numbers is 2028 and their HCF is 13. What are the n   [#permalink] 17 Jul 2017, 17:08
Display posts from previous: Sort by