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WORKBOOK

DIFFERENCE OF TWO SETS:

…………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………….

Symbolically, \ = {: ∈ ∉ }
By Venn Diagram:

∩ ***( ∪ ) = (\) + (\) + ( ∩ )

A B
A B B A

A\B A\B A B ise
A\B= 
A B= then A\B=…. A  B then A\B=….

Example 25: Fill in the blanks.

A a) A B  ....
B
1
b) A B  ...
2 3 7 b
5 a c) A B  ....

d) B  A  ...

Example 26: Given n(A – B) = 3x + 2, n(B – A) = 4x – 4, n(A B) = 6 and n(A B) = 25, then find
n(A).

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