Which of the following is a rational number between 4 and 4.5?

4.25

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4.65

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8.5

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8.25

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Solution

The correct option is A
4.25

The average of any two rational numbers is again a rational number. Thus, a rational number between 4 and 4.5 is

$\frac{4 + 4.5}{2} = \frac{8.5}{2} = 4.25$
Therefore, 4.25 is a rational number between 4 and 4.5 .

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