can you explain this question with a few more examples?
Redundant paranthesis
@mikkyimran in this qstn you are given expression you have to tell whether that bracket contains unnecessary bracket or means redundant bracket or not take egs:
((a+b)+((c+d)))
The subexpression “c+d” is surrounded by two
pairs of brackets.
hence this is redundant
(((a+(b))+c+d))
The whole expression is surrounded by two
pairs of brackets.
Hence this is redundant
((a+b)+(c+d))
No subsexpression is surrounded by duplicate
brackets.
hence this is non redundant
Hope you get the qstn now
Happy coding 
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