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| Question 536859:  Find all sets S , if any, such that S ⊆ { 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 } and S satisfies each and all of the following conditions:
 i) S ∩ { 1 , 2 , 3 , 4 , 5 } = { 2 , 4 } ,
 ii) S ∪ { 2 , 3 , 5 , 6 , 8 } = { 2 , 3 , 4 , 5 , 6 , 7 , 8 } , and
 iii) S – { 3 , 4 , 7 , 8 , 9 } = { 1 , 5 , 6 }
 I know how to do i, ii, but iii seems to be little tricky and how to S that satisfies ALL of the following? Thanks!
 Answer by Edwin McCravy(20064)
      (Show Source): 
You can put this solution on YOUR website! You have copied something wrong! i) tells us that 1 is NOT
 a member (element) of S
 yet iii) tells us that 1 IS an element
 (member) of S.
 
 
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