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Senior PS Moderator
Status: It always seems impossible until it's done.
Joined: 16 Sep 2016
Posts: 731
GMAT 1: 740 Q50 V40 GMAT 2: 770 Q51 V42
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Re: The subsets of the set {w, x, y} are {w}, {x}, {y}, {w, x}, {w, y},
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 02 Jan 2019, 05:17
UNSTOPPABLE12, Happy to help!  Also, another tip for getting a glimpse of the best action on the forum would be to "follow" some mods, experts and your favorite answer writers. (By pressing the follow button below the profile pic of the user you want to follow) That way you get notifications whenever a new post is made and can be a part of more discussions than when you venture out on your own on the forums. All the best! Kind Regards, Gladi
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Gladi
“Do. Or do not. There is no try.” - Yoda (The Empire Strikes Back)
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GMAT Club Legend
Joined: 18 Aug 2017
Posts: 5436
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)
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Re: The subsets of the set {w, x, y} are {w}, {x}, {y}, {w, x}, {w, y},
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02 Jan 2019, 17:38
JDPB7 wrote: The subsets of the set {w, x, y} are {w}, {x}, {y}, {w, x}, {w, y}, {x,y}, {w, x, y}, and { } (the empty subset).
How many subsets of the set {w, x, y, z} contain w?
(A) Four
(B) Five
(C) Seven
(D) Eight
(E) Sixteen for set (w,x,y,x); the subsets containing w would b (w),(wx),(wy), ( wz), ( wxy,wzx,wyz)(wxyz); 8
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Intern
Joined: 24 Nov 2018
Posts: 19
Location: India
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Re: The subsets of the set {w, x, y} are {w}, {x}, {y}, {w, x}, {w, y},
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04 Mar 2019, 22:34
Sets containing w:
can be a set of 1:
{w} 1 way
Can be a set of two:
{w, _} can be selected by 3c1 ways
ie. 3 ways
can be a set of three:
{w,_,_} can be selected by 3c2 ways
ie. 3 ways
can be set of four:
{w, x, y, z}
1 way
Adding 1+3+3+1= 8 ways
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VP
Joined: 23 Feb 2015
Posts: 1341
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Re: The subsets of the set {w, x, y} are {w}, {x}, {y}, {w, x}, {w, y},
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24 Nov 2019, 02:54
JDPB7 wrote: The subsets of the set {w, x, y} are {w}, {x}, {y}, {w, x}, {w, y}, {x,y}, {w, x, y}, and { } (the empty subset).
How many subsets of the set {w, x, y, z} contain w?
(A) Four
(B) Five
(C) Seven
(D) Eight
(E) Sixteen Hi BunuelThe total subsets (16) of { w, x, y, z} are: With w: 1. {w} 2. {w , x} 3. {w , y} 4. {w , z} 5. {w , x , y} 6. {w , y , z} 7. {w , x , z} 8. {w , x , y , z} Without w: 1. {x} 2. {y} 3. {z} 4. {x,y} 5. {x,z} 6. {y,z} 7. {x,y,z} 8. {} Is it ok? Thanks__
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“The heights by great men reached and kept were not attained in sudden flight but, they while their companions slept, they were toiling upwards in the night.”― Henry Wadsworth LongfellowSEARCH FOR ALL TAGS
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Math Expert
Joined: 02 Sep 2009
Posts: 59588
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Re: The subsets of the set {w, x, y} are {w}, {x}, {y}, {w, x}, {w, y},
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24 Nov 2019, 03:10
Asad wrote: JDPB7 wrote: The subsets of the set {w, x, y} are {w}, {x}, {y}, {w, x}, {w, y}, {x,y}, {w, x, y}, and { } (the empty subset).
How many subsets of the set {w, x, y, z} contain w?
(A) Four
(B) Five
(C) Seven
(D) Eight
(E) Sixteen Hi BunuelThe total subsets (16) of { w, x, y, z} are: With w: 1. {w} 2. {w , x} 3. {w , y} 4. {w , z} 5. {w , x , y} 6. {w , y , z} 7. {w , x , z} 8. {w , x , y , z} Without w: 1. {x} 2. {y} 3. {z} 4. {x,y} 5. {x,z} 6. {y,z} 7. {x,y,z} 8. {} Is it ok? Thanks__ ____________________ Yes, that's OK.
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Re: The subsets of the set {w, x, y} are {w}, {x}, {y}, {w, x}, {w, y},
[#permalink]
24 Nov 2019, 03:10
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