Topics

General Knowledge
General Science
General English
Aptitude
General Computer Science
General Intellingence and Reasoning
Current Affairs
Exams
Elementary Mathematics
English Literature

The value of \( \Large \left[\left( \frac{p}{q} \right)^{-1} \right] ^{-1}\) is

A) \(\Large \frac{p}{q} \)
B) \(\Large \frac{q}{p} \)
C) \(\Large - \frac{p}{q} \)
D) \(\Large - \frac{q}{p} \)

Correct Answer:

A) \(\Large \frac{p}{q} \)

Description for Correct answer:

\( \Large \left[ \left(\frac{p}{q} \right)^{-1} \right]^{-1} \)

=\( \Large \left[\frac{1}{p/q} \right]^{-1} \)

=\( \Large \left[ \frac{q}{p} \right]^{-1}\)

=\( \Large \frac{1}{q/p}\)

=\( \Large \frac{p}{q} \)

Part of solved Number System questions and answers : >> Aptitude >> Number System

Comments

Similar Questions

1). The value of \( \sqrt{2\sqrt{2\sqrt{2\sqrt{2}}}} \) is

A). \( \large 2^{1/2} \)

B). \(\large 2^{1/4} \)

C). \( \large 2^{1/8} \)

D). \(\large 2^{1/16} \)

2). Rationalising factor of the surd \( \sqrt{a} - \sqrt{b} \) is

A). \( \Large \sqrt{a} + \sqrt{b} \)

B). \(\Large \frac{1}{\sqrt{a}} + \frac{1}{\sqrt{b}} \)

C). \(\Large \frac{1}{\sqrt{a} + \sqrt{b}} \)

D). \(\Large \frac{1}{\sqrt{a} - \sqrt{b}} \)

3). If \(\Large 2^{2x - 5} = \frac{1}{8} \), then the value of x is

A). 1

B). 2

C). 3

D). 4

4). Square root of a perfect square containing 'n' digits has how many digits?

A). \(\Large \frac{n+1}{2} \)

B). \( \Large \frac{n}{2} \)

C). Either a or b

D). None of these

5). Value of \( \Large \sqrt[3]{343} \times \sqrt[3]{-125} \) is

A). 35

B). -35

C). \( \Large \frac{7}{5} \)

D). \( \Large \frac{5}{7} \)

6). If \( a^3 = b^3 + c^3 + d^3 \), then least value of 'a' is

A). 3

B). 6

C). 9

D). 12

7). The value of \( \Large \frac{9}{\sqrt{11} + \sqrt{2}} \) is

A). \(\left( \sqrt{11}+\sqrt{2}^2 \right) \)

B). 9\(\left( \sqrt{11}+\sqrt{2} \right) \)

C). \(\left( \sqrt{11} - \sqrt{2} \right) \)

D). None of these.

8). Rationalising factor of \( a^2 + ab + b^2 \) is

A). a + b

B). \( a^2 + b^2 \)

C). \( a^2 - b^2 \)

D). a - b

9). Rationalising factor of \(a - \sqrt{b} \) is

A). \(-a + \sqrt{b} \)

B). \(a - \sqrt{b} \)

C). \(-a - \sqrt{b} \)

D). \(a + \sqrt{b} \)

10). 297144 is divisible by

A). 3

B). 9

C). 6

D). All of these