Question:On simplifaction, the expression `1-[1 - {1 - (1 - 1 - 1)}]`yields. 

A `0` 
B `1` 
C `2` 
D `3` 

+ Answer
A 

+ Explanation
Given Exp,

`= 1 -[1 - {1 - (1 - bar1 - 1)}]`

`= 1 - [1 - {1 - (1 - 0)}]`

`= 1 - [1 - {1 - 1}]`

`= 1 - [1 - 0]`

`= (1 - 1)`

`= 0`

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Irin Moni

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