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Which of the following is a rational number?

Correct Answer: 4

Explanation:

Any number which can be expressed as a fraction of two integers like P & Q as P/Q where Q is not equal to zero.


Every integer is a rational number since Q can be 1.


 


Hence, in the given options, 4 can be expressed as a simple fraction as 4/1. And all other options cannot be expressed as fractions.


 


Hence, 4 is a rational number in the given options.


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