Is it a Subset?

Probability Level 1

A = { 6 , 2 , 4 , 1 , 5 } A = \{6,2,4,1,5\} .

Which of the options below is not a proper subset of A A ?

  • { 2 } \{2\}
  • { 1 , 2 , 3 } \{1,2,3\}
  • { 6 , 5 , 2 , 1 } \{6,5,2,1\}
  • { 1 , 2 , 4 , 5 } \{1,2,4,5\}
{ 1 , 2 , 3 } \{1,2,3\} { 6 , 5 , 2 , 1 } \{6,5,2,1\} { 2 } \{2\} { 1 , 2 , 4 , 5 } \{1,2,4,5\}

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Karleigh Moore by Karleigh Moore , 27, USA

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2 solutions

Sam Bealing
Apr 16, 2016

Set [ 1 , 2 , 3 ] [1,2,3] has element [ 3 ] [3] but this is not in the original set so this set is not a proper subset.

9 Helpful 0 Interesting 0 Brilliant 0 Confused
Arsalan Khan
Jun 5, 2018

Since set {1,2,3} contains "3" which is not in set A therefore this set is not a proper subset of A.

0 Helpful 0 Interesting 0 Brilliant 0 Confused

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