Yes, 7.8 is considered a rational number. A rational number is defined as any number that can be expressed as the quotient or fraction \( \frac{a}{b} \), where \( a \) and \( b \) are integers and \( b \) is not zero.
In the case of 7.8, it can be expressed as \( \frac{78}{10} \), which is a fraction of two integers (78 and 10). Therefore, 7.8 qualifies as a rational number.
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