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Recent questions tagged subsets

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ISI2015-MMA-5
A set contains $2n+1$ elements. The number of subsets of the set which contain at most $n$ elements is $2^n$ $2^{n+1}$ $2^{n-1}$ $2^{2n}$

Arjun asked in Set Theory & Algebra Sep 23, 2019

by Arjun

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2 answers

2

ISI2016-MMA-13
Which one of the following statements is correct regarding the elements and subsets of the set $\{1, 2, \{1, 2, 3\}\}$? $\{1, 2\} \in \{1, 2, \{1, 2, 3\} \}$ $\{1, 2\} \subseteq \{1, 2, \{1, 2, 3\} \}$ $\{1, 2, 3\} \subseteq \{1, 2, \{1, 2, 3\} \}$ $3 \in \{1, 2, \{1, 2, 3\} \}$

go_editor asked in Set Theory & Algebra Sep 13, 2018

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Recent questions tagged subsets