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How can (-6) be written as a rational number?

Answer and explanation

Correct answer: -6/1

The governing concept is the definition of a rational number: it is any number that can be written as p/q, where p and q are integers and q is not zero. The integer -6 can therefore be represented by placing it over 1: -6/1 = -6. Option A is correct because its denominator is non-zero and its value is exactly -6. Option B equals -1/6, not -6. Option C is invalid because division by zero is undefined. Option D equals 0, so it also does not represent -6. Thus every integer, including a negative integer, is rational because it can be divided by 1.

Related tags

Rational NumbersIntegersClass 9Number SystemsMathematicsClass 9 Mcq

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