Quantitative Aptitude Questions and Answers section on “Power, Indices and Surds” with solution and explanation for competitive examinations such as CAT, MBA, SSC, Bank PO, Bank Clerical and other examinations.

# Power, Indices and Surds

Evalute :

[A]21

[B]20

[C]18

[D]16

**16**

Since given expression is ;

Hence option [D] is the right answer.

If , Then find the value of .

[A]3.28

[B]3

[C]6.25

[D]1.14

**3**

Hence option [B] is the right answer.

Find the value of :

[A]

[B]

[C]

[D]

Hence option [A] is correct.

What would be the squre root of 0.0009

[A]0.003

[B]0.03

[C]0.09

[D]0.0003

**0.03**

Hence option [B] is the right answer.

Find the value of :

[A]

[B]

[C]

[D]

Given expression is

Now since the sum of decimal places in the numerator and denominator under the redical sign is the same, so we can remove all decimals.

So now expression is ;

Hence option [B] is the right answer.

Evalute :

[A]

[B]

[C]

[D]

Hence option [C] is the right answer.

Find the value of :

[A]86

[B]84

[C]98

[D]76

**84**

Hence right answer is 84.

If and , Then find the squre root of :

[A]3.348

[B]3.246

[C]3.146

[D]3.148

**3.146**

and

What will come instead of question mark in the following question?

[A]24

[B]27

[C]26

[D]23

**26**

let ,

Then ;

The simplified form of is :

[A]

[B]0

[C]

[D]1

Hence option [C] is the right answer.