Page 29 - Math Booklet Prep1first part1_Neat
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Example
Put the suitable ( ? or ? or ? or ? )
a){ 2 , 3 } …?…….. { 1 , 2 , 3 }
b){ b } ……?……. { b , c }
c)32 ……?…….. { 32 }
d) { 0 } …?…….. Ø
e)52 …… ?…. the set of digits of the number5252
f){ 22 } ……?…. { 2 }
Operation on sets
1) Intersection of two sets
A n B means the common elements of both sets A and B
AB A AB
B
1 2? 4 ?1 ?3
? 3? ?1 ?2 ?4
? ?2 ?3
?4
A n B = {2 ,3} A n B = {1 , 2} A nB = ?
B ? A , then A n B = B
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