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.
Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:
From the set of numbers x, y, t, z and w, how many different
[#permalink]
Show Tags
19 Jun 2010, 14:48
2
3
00:00
A
B
C
D
E
Difficulty:
55% (hard)
Question Stats:
59% (01:44) correct 41% (02:01) wrong based on 108 sessions
HideShow timer Statistics
From the set of numbers x, y, t, z and w, how many different combinations can we have without the t in them? Ex:. (x,y), (x), (w,z,y,x), etc and (x,y)=(y,x)
From the set of numbers x, y, t, z and w, how many different combinations can we have without the t in them? Ex:. (x,y), (x), (w,z,y,x), etc and (x,y)=(y,x)
A)10 B)14 C)15 D)16 E)30
There are 4 letter without t: x, y, z, and w, so: \(C^1_4+C^2_4+C^3_4+C^4_4=4+6+4+1=15\)
Re: From the set of numbers x, y, t, z and w, how many different
[#permalink]
Show Tags
10 Apr 2017, 16:09
Question is to find no of combinations of x,y,z,w
Choosing only 1 letter - 4C1 ways = 4 Choosing only 2 letter - 4C2 ways = 6 Choosing only 3 letter - 4C3 ways = 4 Choosing only 4 letter - 4C4 ways = 1
Total possible combinations = 4+6+4+1 = 15
_________________
Re: From the set of numbers x, y, t, z and w, how many different
[#permalink]
Show Tags
18 Aug 2018, 09:56
Gusano97 wrote:
From the set of numbers x, y, t, z and w, how many different combinations can we have without the t in them? Ex:. (x,y), (x), (w,z,y,x), etc and (x,y)=(y,x)
A. 10 B. 14 C. 15 D. 16 E. 30
OA:C Set of numbers formed by using x, y,z and w Case 1 : Using 1 number only C(4,1) =4 Case 2 : Using 2 number only C(4,2) =6 Case 3 : Using 3 number only C(4,3) =4 Case 4 : Using 4 number only C(4,4) =1 Total cases :4+6+4+1=15
gmatclubot
Re: From the set of numbers x, y, t, z and w, how many different &nbs
[#permalink]
18 Aug 2018, 09:56
close
59% (01:44) correct 
