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

It is currently 17 Oct 2019, 08:30

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

A restaurant offers a $10-meal that consists of exactly three food ite

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

Hide Tags

Find Similar Topics 
Intern
Intern
avatar
Joined: 21 Jan 2019
Posts: 4
A restaurant offers a $10-meal that consists of exactly three food ite  [#permalink]

Show Tags

New post 28 Jun 2019, 18:12
6
00:00
A
B
C
D
E

Difficulty:

  95% (hard)

Question Stats:

15% (01:45) correct 85% (01:27) wrong based on 39 sessions

HideShow timer Statistics

A restaurant offers a $10-meal that consists of exactly three food items out of:
Burger, Sandwich, Pizza, French Fries, Coke
If Andy has to buy either a coke or a burger, in how many ways can he select his meal?

A. 3
B. 6
C. 9
D. 10
E. 12
SVP
SVP
User avatar
P
Joined: 03 Jun 2019
Posts: 1696
Location: India
Premium Member Reviews Badge CAT Tests
Re: A restaurant offers a $10-meal that consists of exactly three food ite  [#permalink]

Show Tags

New post 29 Jun 2019, 04:53
N22J wrote:
A restaurant offers a $10-meal that consists of exactly three food items out of:
Burger, Sandwich, Pizza, French Fries, Coke
If Andy has to buy either a coke or a burger, in how many ways can he select his meal?
A. 3
B. 6
C. 9
D. 10
E. 12

Posted from my mobile device


Since Andy has to buy a coke or a burger => gives us 2 choices and we have to chose 2 out of 3 meals for $10 meal which can be done in 3C2 = 3 ways
this gives us cases BSP, BSF, BPF, CSP, CSF, CPF. There are total 6 cases.

IMO B 6 should be correct.
_________________
"Success is not final; failure is not fatal: It is the courage to continue that counts."

Please provide kudos if you like my post. Kudos encourage active discussions.

My GMAT Resources: -

Efficient Learning
All you need to know about GMAT quant

Tele: +91-11-40396815
Mobile : +91-9910661622
E-mail : kinshook.chaturvedi@gmail.com
Intern
Intern
avatar
Joined: 21 Jan 2019
Posts: 4
Re: A restaurant offers a $10-meal that consists of exactly three food ite  [#permalink]

Show Tags

New post 29 Jun 2019, 05:18
Actually you have one more choice of having both as well, so 3 more combinations

Posted from my mobile device
SVP
SVP
User avatar
P
Joined: 03 Jun 2019
Posts: 1696
Location: India
Premium Member Reviews Badge CAT Tests
Re: A restaurant offers a $10-meal that consists of exactly three food ite  [#permalink]

Show Tags

New post 29 Jun 2019, 05:21
N22J wrote:
Actually you have one more choice of having both as well, so 3 more combinations

Posted from my mobile device


Andy has to buy either a coke or a burger means he can choose 1 out of the 2 not both.
Is it correct?
_________________
"Success is not final; failure is not fatal: It is the courage to continue that counts."

Please provide kudos if you like my post. Kudos encourage active discussions.

My GMAT Resources: -

Efficient Learning
All you need to know about GMAT quant

Tele: +91-11-40396815
Mobile : +91-9910661622
E-mail : kinshook.chaturvedi@gmail.com
Intern
Intern
avatar
B
Joined: 26 Jun 2019
Posts: 31
Location: India
GMAT 1: 660 Q51 V29
GPA: 3.3
Re: A restaurant offers a $10-meal that consists of exactly three food ite  [#permalink]

Show Tags

New post 29 Jun 2019, 05:23
But the question says either or right? Which shoul mean only one out of the two right?

Posted from my mobile device
GMAT Tutor
avatar
G
Joined: 24 Jun 2008
Posts: 1806
Re: A restaurant offers a $10-meal that consists of exactly three food ite  [#permalink]

Show Tags

New post 29 Jun 2019, 06:27
1
If there were no restrictions at all, he'd be able to choose 5C3 = 5*4*3/3! = 10 different meals. The only one of these meals that doesn't include a burger or a coke is {pizza, fries, sandwich}. That leaves us with 10 - 1 = 9 meals that do include a burger or a coke (or both).

As the question is worded, I would not interpret the "or" as an "exclusive or", though I agree the question should be clearer about that. If you do assume that he can only buy one of the two foods (burger or coke, but not both), the answer is 6.
_________________
GMAT Tutor in Toronto

If you are looking for online GMAT math tutoring, or if you are interested in buying my advanced Quant books and problem sets, please contact me at ianstewartgmat at gmail.com
Senior Manager
Senior Manager
avatar
P
Joined: 09 Jun 2014
Posts: 352
Location: India
Concentration: General Management, Operations
Premium Member Reviews Badge
Re: A restaurant offers a $10-meal that consists of exactly three food ite  [#permalink]

Show Tags

New post 29 Jun 2019, 07:24
N22J wrote:
A restaurant offers a $10-meal that consists of exactly three food items out of:
Burger, Sandwich, Pizza, French Fries, Coke
If Andy has to buy either a coke or a burger, in how many ways can he select his meal?
A. 3
B. 6
C. 9
D. 10
E. 12

Posted from my mobile device



Assuming the either a coke or a burger in mean implies he can select only a burger or a coke out of the two= 2C1

Selecting remaining 2 food items out of Sandwich, Pizza, French Fries= 3C2

Therefore,number of ways in which he can select his mean=3C2*2C1= 6

Hope it helps!!
Intern
Intern
avatar
Joined: 21 Jan 2019
Posts: 4
Re: A restaurant offers a $10-meal that consists of exactly three food ite  [#permalink]

Show Tags

New post 29 Jun 2019, 07:37
Try this to understand "Either or"

From 1 to 50, how many numbers are divisible by either 2 or 5?

Will you count 10, 20,...or not?

Posted from my mobile device
Intern
Intern
avatar
Joined: 21 Jan 2019
Posts: 4
Re: A restaurant offers a $10-meal that consists of exactly three food ite  [#permalink]

Show Tags

New post 29 Jun 2019, 07:38
Try this to understand "Either or"

From 1 to 50, how many numbers are divisible by either 2 or 5?

Will you count 10, 20,...or not?
Senior Manager
Senior Manager
avatar
P
Joined: 09 Jun 2014
Posts: 352
Location: India
Concentration: General Management, Operations
Premium Member Reviews Badge
Re: A restaurant offers a $10-meal that consists of exactly three food ite  [#permalink]

Show Tags

New post 29 Jun 2019, 07:48
N22J wrote:
Try this to understand "Either or"

From 1 to 50, how many numbers are divisible by either 2 or 5?

Will you count 10, 20,...or not?


Numbers divisible by 2 = (50-2)/2 + 1 = 25
Numbers divisible by 5= (50-5)/5 + 1 = 10

Numbers divisible by both 2 and 5 =ones divisible by 10= 5

So numbers are divisible by either 2 or 5 = 25+10-5 = 30

Here either or..means div by 2 + div by 5 - Not divisible by both
GMAT Club Bot
Re: A restaurant offers a $10-meal that consists of exactly three food ite   [#permalink] 29 Jun 2019, 07:48
Display posts from previous: Sort by

A restaurant offers a $10-meal that consists of exactly three food ite

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





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