An improper fraction is one where the numerator is greater than or equal to the denominator.
Let's analyze the given options:
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2 9/7 - This is a mixed number and can be converted to an improper fraction: \(2 \times 7 + 9 = 14 + 9 = 23/7\) (improper fraction).
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25/20 - This fraction is \(25\) (numerator) greater than \(20\) (denominator), so it is an improper fraction.
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20/25 - This fraction has \(20\) (numerator) less than \(25\) (denominator), so it is a proper fraction.
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7 2/9 - This is also a mixed number and can be converted to an improper fraction: \(7 \times 9 + 2 = 63 + 2 = 65/9\) (improper fraction).
So, the improper fractions in the list are:
- 2 9/7 (equivalent to 23/7)
- 25/20
- 7 2/9 (equivalent to 65/9)
Thus, 25/20 is the simplest answer as an improper fraction since the question asks for any one of them.
Therefore, any of the following would be correct: 2 9/7, 25/20, or 7 2/9.