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Square Root and Cube Root - General Aptitude

Q1:

3 - 1 2 simplifies to:
3

A
3
4

B
4
3

C
4
3

D None of these

ANS:C -

4
3

3 - 1 2 = ()2 + 1 2 - 2 x 3 x 1
3 3 3
= 3 + 1 - 2
3
= 1 + 1
3
= 4
3