Final Answer:
Without the specific number of pieces of paper allocated to Group A and Group B provided, it's not possible to calculate the fraction of papers for Group C from the information given.
Step-by-step explanation:
The question poses a scenario where 25 students in Naomi's history class have pieces of paper allocated for Group A, Group B, and potentially Group C. However, crucial information is missing regarding the exact distribution or quantity of papers between Group A, Group B, and Group C. The total number of students in the class, while given, doesn't provide the necessary details to ascertain the fraction of papers designated for Group C.
To determine the fraction of papers for Group C, the quantities of papers assigned to Groups A and B need to be known, as well as the total number of papers for all groups. Without this information, calculating the fraction of papers allocated to Group C is impossible. If, for instance, the number of papers for Group A and Group B were given as 10 and 8, respectively, out of a total of 25 papers, the fraction for Group C could be calculated as the difference between the total and the sum of papers for Group A and Group B divided by the total, i.e., (25 - (10 + 8)) / 25 = 7/25.
In summary, without the specific quantities of papers distributed to Group A and Group B, the fraction or proportion of papers designated for Group C cannot be calculated based solely on the information provided, as it lacks the necessary data for a mathematical determination.