GRE Prep 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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
At Deb’s Deli, a customer may choose either a sandwich and a
[#permalink]
10 Jul 2019, 05:38
10 Jul 2019, 05:38
1
00:00
Question Stats:
99% (00:49) correct
0% (00:00) wrong based on 14 sessions
Hide Show timer Statistics
At Deb’s Deli, a customer may choose either a sandwich and a salad or a sandwich and a soup for the lunch special. There are 5 choices of sandwich, 4 choices of salad, and 3 choices of soup. How many possible lunch special combinations can be ordered?
Show: ::
35
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
At Deb’s Deli, a customer may choose either a sandwich and a
[#permalink]
10 Jul 2019, 09:55
10 Jul 2019, 09:55
1
arpitjain wrote:
At Deb’s Deli, a customer may choose either a sandwich and a salad or a sandwich and a soup for the lunch special. There are 5 choices of sandwich, 4 choices of salad, and 3 choices of soup. How many possible lunch special combinations can be ordered?
Take the task of choosing what to eat and break it into stages.
Stage 1: Select a sandwich
Since there are 5 choices of sandwich to choose from, we can complete stage 1 in 5 ways
Stage 2: Select EITHER a salad OR a soup
There are 4 choices of salad, and 3 choices of soup (7 options in total)
So we can complete stage 2 in 7 ways
By the Fundamental Counting Principle (FCP), we can complete the two stages (and thus create a lunch) in (5)(7) ways (= 35 ways)
Answer: 35
Note: the FCP can be used to solve the MAJORITY of counting questions on the GRE. So, be sure to learn it.
RELATED VIDEOS
At Laura’s Deli, a customer may choose either a sandwich and
[#permalink]
26 Oct 2020, 22:22
26 Oct 2020, 22:22
