Q25 of 31 Page 7

Evaluate:   [CBSE 2017]




Adding (1) & (2), we get-









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23

Evaluate:


OR


Evaluate:


    [CBSE 2016]

 24

Find:   [CBSE 2017]

 26

Evaluate:

  [CBSE 2017]

 27

Find    

[CBSE 2018]