Fractions with numerator greater than the denominator
When we talk about fractions, we usually have a numerator and a denominator. The numerator represents the number of parts we have, while the denominator represents the total number of equal parts the whole is divided into. In some cases, the numerator can be greater than the denominator. Let's explore the different types of fractions and see in which one the numerator is greater than the denominator.

1. Like Fractions:
Like fractions are fractions that have the same denominator. For example, 2/5, 3/5, and 4/5 are like fractions because they all have the same denominator, which is 5. In like fractions, the numerator cannot be greater than the denominator. Therefore, like fractions do not fulfill the condition of having the numerator greater than the denominator.

2. Improper Fractions:
Improper fractions are fractions where the numerator is greater than or equal to the denominator. For example, 7/4 and 5/3 are improper fractions because their numerators (7 and 5) are greater than their denominators (4 and 3). In the case of improper fractions, the numerator can be greater than the denominator. Therefore, the correct answer is option 'B' - Improper fractions.

3. Proper Fractions:
Proper fractions are fractions where the numerator is always less than the denominator. For example, 2/3 and 4/7 are proper fractions because their numerators (2 and 4) are less than their denominators (3 and 7). In proper fractions, the numerator cannot be greater than the denominator.

4. Mixed Fractions:
Mixed fractions are a combination of a whole number and a proper fraction. For example, 1 2/5 and 3 1/2 are mixed fractions. In mixed fractions, the numerator of the proper fraction part will always be less than the denominator.

Conclusion:
Out of the given options, the numerator can be greater than the denominator in improper fractions (option 'B'). Like fractions, proper fractions, and mixed fractions do not fulfill this condition.