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# If 'a' and 'b' are two rational numbers, then $$\left( \frac{a}{b}\right)^{-n}$$ is equal to

 A) $$-n \left( \frac{a}{b} \right)$$ B) $$-\left(\frac{a}{b} \right)$$ C) $$\Large \frac{1}{\left( \frac{b}{a} \right)^n}$$ D) $$\Large \frac{1}{\left( \frac{a}{b} \right)^n}$$

 D) $$\Large \frac{1}{\left( \frac{a}{b} \right)^n}$$

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

Similar Questions
1). If sum of integers from 101 to 200, inclusive is subtracted from the sum of integers from 201 to 300 inclusive, then the result is
 A). 0 B). 100 C). 1000 D). 10000
2). If $$\Large k \neq 0$$ and $$\Large k \neq 1$$, then which of the following cannot be true?
 A). $$k^2 > k$$ B). $$k^2 < k$$ C). $$k^2 = k$$ D). Both b and c
3). Which of the following is equal to $$\Large 3^4.3^3$$?
 A). $$\Large 3^{7}$$ B). $$\Large 3^{12}$$ C). $$\Large 6^{7}$$ D). $$\Large 9^{12}$$
4). Value of $$\Large \left( \frac{2^{-3}}{5} \right) ^{-2}$$ is
 A). $$\Large \frac{1}{1600}$$ B). 1600 C). $$\Large \frac{1}{40}$$ D). 40
5). If $$\Large x^{-2/3}$$ = $$\Large \frac{1}{4}$$ and x is a positive whole number, then the value of 2x is
 A). 8 B). 16 C). 24 D). 32

6). If $$x^2$$ = 64 and $$y^2$$ = 49, then difference between greatest possible value of (x - y) and least possible value of (x + y) is
 A). 0 B). 10 C). 15 D). 30
8). If $$4^2 + 5^2 +x^2 = 21^2$$, then the value of x is