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

It is currently 17 Jun 2019, 08:01

Close

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
Your Progress

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

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

In the multiplication table above, each letter represents an integer.

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

 
Director
Director
User avatar
B
Status: I don't stop when I'm Tired,I stop when I'm done
Joined: 11 May 2014
Posts: 530
Location: Bangladesh
Concentration: Finance, Leadership
GPA: 2.81
WE: Business Development (Real Estate)
In the multiplication table above, each letter represents an integer.  [#permalink]

Show Tags

New post 24 Jun 2017, 04:01
7
Top Contributor
34
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

79% (01:51) correct 21% (01:56) wrong based on 1309 sessions

HideShow timer Statistics

Attachment:
2018.OG.06.288.q.jpg
2018.OG.06.288.q.jpg [ 8.83 KiB | Viewed 11230 times ]
In the multiplication table above, each letter represents an integer. What is the value of c ?

(1) c=f

(2) h≠0

_________________
Md. Abdur Rakib

Please Press +1 Kudos,If it helps
Sentence Correction-Collection of Ron Purewal's "elliptical construction/analogies" for SC Challenges
Most Helpful Expert Reply
Target Test Prep Representative
User avatar
D
Status: Founder & CEO
Affiliations: Target Test Prep
Joined: 14 Oct 2015
Posts: 6522
Location: United States (CA)
Re: In the multiplication table above, each letter represents an integer.  [#permalink]

Show Tags

New post 17 Nov 2017, 12:33
7
5
AbdurRakib wrote:
Attachment:
2018.OG.06.288.q.jpg
In the multiplication table above, each letter represents an integer. What is the value of c ?

(1) c=f

(2) h≠0


We need to determine the value of c. Following our table, we have:

a x c = f

b x c = h

and

c^2 = j

Statement One Alone:

c = f

Since c = f, we have:

a x c = c

ac - c = 0

c(a - 1) = 0

c = 0 or a = 1

We see that either c = 0 or a = 1 (if c ≠ 0). Since we don’t know whether c is 0, we cannot determine the value of c. Statement one alone is not sufficient to answer the question.

Statement Two Alone:

h ≠ 0

Since h is not zero, neither b nor c is zero. However, we still can’t determine the value of c. Statement two alone is not sufficient to answer the question.

Statements One and Two Together:

Using statement two, we know that c ≠ 0, and thus from statement one, a = 1. However, c can be any nonzero number, so we still cannot determine a value for c.

Answer: E
_________________

Scott Woodbury-Stewart

Founder and CEO

Scott@TargetTestPrep.com
TTP - Target Test Prep Logo
122 Reviews

5-star rated online GMAT quant
self study course

See why Target Test Prep is the top rated GMAT quant course on GMAT Club. Read Our Reviews

If you find one of my posts helpful, please take a moment to click on the "Kudos" button.

General Discussion
Retired Moderator
User avatar
P
Joined: 19 Mar 2014
Posts: 929
Location: India
Concentration: Finance, Entrepreneurship
GPA: 3.5
GMAT ToolKit User
Re: In the multiplication table above, each letter represents an integer.  [#permalink]

Show Tags

New post 24 Jun 2017, 12:02
3
(1) c=f

This will not give us a value (a number) for c ===> NOT SUFFICIENT

(2) h≠0

This will still not help us to get the value of c ===> NOT SUFFICIENT

Lets combine (1) & (2) - we will still not be able to determine the value of c

Hence, Answer is E
_________________
"Nothing in this world can take the place of persistence. Talent will not: nothing is more common than unsuccessful men with talent. Genius will not; unrewarded genius is almost a proverb. Education will not: the world is full of educated derelicts. Persistence and determination alone are omnipotent."

Best AWA Template: https://gmatclub.com/forum/how-to-get-6-0-awa-my-guide-64327.html#p470475
Intern
Intern
avatar
B
Joined: 13 Dec 2016
Posts: 6
Re: In the multiplication table above, each letter represents an integer.  [#permalink]

Show Tags

New post 25 Jun 2017, 13:02
1
1) c=f
a)either a = 1 and c is any integer
b) c and f are both zeros .

We are not able to figure out the exact value of c .

2) h≠0
this shows that c,b≠0 . c could be any positive integer .

Taking together 1 and 2
this negates the case a . c can still be any integer except 0 .

Answer is E
Retired Moderator
avatar
P
Joined: 22 Aug 2013
Posts: 1438
Location: India
Re: In the multiplication table above, each letter represents an integer.  [#permalink]

Show Tags

New post 03 Jul 2017, 04:23
1
3
We can see that a*c = f and b*c = h

Statement 1. c=f, This means a*c = c.
So either a=1, and then c could take any value
OR c=0, then a could take any value. We cant say anything surely about c.

Statement 2. h ≠ 0. So b*c ≠ 0
This means neither of b or c can be 0, but we cant say anything surely about c.

Combining the two statements: a*c = c, where c ≠ 0
This means definitely a = 1, but c could be any integer except 0. Insufficient.

Hence E answer
Intern
Intern
avatar
B
Joined: 03 Dec 2017
Posts: 17
Re: In the multiplication table above, each letter represents an integer.  [#permalink]

Show Tags

New post 24 Mar 2018, 06:20
The official explanation to this question is the following: But I still don't get it :-/


Arithmetic Properties of numbers

Given that c = f, the examples below, in which a = b = 1, show that the value of c could be 1 and the value of c could be 2; NOT sufficient.



Given that h ≠ 0, the examples in (1) show that the value of c could be 1 and the value of c could be 2; NOT sufficient.
Taking (1) and (2) together is of no more help than either (1) or (2) taken separately because the same examples used to show that (1) is not sufficient also show that (2) is not sufficient.

Both statements together are still not sufficient.
Intern
Intern
avatar
Joined: 04 May 2015
Posts: 4
Re: In the multiplication table above, each letter represents an integer.  [#permalink]

Show Tags

New post 26 Jul 2018, 04:13
I see a problem in this question. In the multiplication table it is stated that:
a*a= d hence "a" cannot equal 1! other wise a*a would = a. so based on my observation I chose (A). because if a doesn't equal 1 then c=0.

for whom got an explanation please answer
Intern
Intern
avatar
B
Joined: 16 Aug 2018
Posts: 28
Concentration: General Management, Strategy
Schools: Guanghua"21 (A)
GMAT 1: 700 Q49 V36
Re: In the multiplication table above, each letter represents an integer.  [#permalink]

Show Tags

New post 18 Aug 2018, 01:20
there're 8 unknowns and 7 equations:
a^2=d
ab=e
af=c
b^2=g
bc=h
c^2=j
c=f
hence we cannot resolve c in this case.
does my logic make sense?
Intern
Intern
User avatar
B
Joined: 06 Sep 2018
Posts: 37
GMAT 1: 760 Q50 V44
GMAT 2: 740 Q48 V44
Reviews Badge
Re: In the multiplication table above, each letter represents an integer.  [#permalink]

Show Tags

New post 12 Sep 2018, 09:09
Hi, when the question says "each letter represents an integer" is it implied that each letter represents a different integer? Could c and b be the same integer for instance? It it doesn't specify "unique integer" then how can I assume it means that?
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 55635
Re: In the multiplication table above, each letter represents an integer.  [#permalink]

Show Tags

New post 12 Sep 2018, 21:56
1
Manager
Manager
User avatar
S
Joined: 11 Aug 2018
Posts: 107
Location: Pakistan
GPA: 2.73
Premium Member CAT Tests
Re: In the multiplication table above, each letter represents an integer.  [#permalink]

Show Tags

New post 21 Sep 2018, 20:49
gmat800live wrote:
Hi, when the question says "each letter represents an integer" is it implied that each letter represents a different integer? Could c and b be the same integer for instance? It it doesn't specify "unique integer" then how can I assume it means that?


Gmat wording is too convoluted I think one has to get used to it.
_________________
If you like this post, be kind and help me with Kudos!

Cheers!
Non-Human User
User avatar
Joined: 09 Sep 2013
Posts: 11377
Re: In the multiplication table above, each letter represents an integer  [#permalink]

Show Tags

New post 18 Nov 2018, 11:56
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
GMAT Club Bot
Re: In the multiplication table above, each letter represents an integer   [#permalink] 18 Nov 2018, 11:56
Display posts from previous: Sort by

In the multiplication table above, each letter represents an integer.

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne