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The number of different subsets of 4 elements
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Updated on: 07 Dec 2020, 10:30
Updated on: 07 Dec 2020, 10:30
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75% (00:55) correct
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The number of different subsets of 4 elements that can be selected from a set of 6 elements is 15. How many different subsets of 3 elements can be selected from a set of 7 elements?
A. 55
B. 42
C. 35
D. 21
A. 55
B. 42
C. 35
D. 21
Originally posted by Sarastudyhard on 06 Dec 2020, 11:44.
Last edited by GreenlightTestPrep on 07 Dec 2020, 10:30, edited 4 times in total.
Last edited by GreenlightTestPrep on 07 Dec 2020, 10:30, edited 4 times in total.
Fixed
Re: The number of different subsets of 4 elements
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06 Dec 2020, 11:49
06 Dec 2020, 11:49
Expert Reply
Please Sir. Follow the rules of the board.
The title of the question must be the first words of the stem.
Moreover, provide the OA
Regards
The title of the question must be the first words of the stem.
Moreover, provide the OA
Regards
Re: The number of different subsets of 4 elements
[#permalink]
06 Dec 2020, 13:19
06 Dec 2020, 13:19
Please Sir. Follow the rules of the board.
The title of the question must be the first words of the stem.
Moreover, provide the OA
Regards[/quote]
Hi, Did I made it right?
Thanks
S
The title of the question must be the first words of the stem.
Moreover, provide the OA
Regards[/quote]
Hi, Did I made it right?
Thanks
S
