What is the absolute difference between students participating in exactly one subject and those in exactly two subjects?

To determine the absolute difference between students participating in exactly one subject and those participating in exactly two subjects, it is essential to first have the specific counts for each category.

When you calculate the number of students engaged in exactly one subject and subtract the number of students involved in exactly two subjects from it, you will arrive at a numerical value. The absolute difference is essentially the positive value of this subtraction, which allows us to express it as a non-negative quantity regardless of which group has more participants.

If the resultant number from the subtraction is 10, for instance, then the absolute difference is indeed 10. This method can be consistently applied to different counts to find the absolute difference between two groups in similar scenarios.

Thus, if the calculation supports that the difference is 10, the correct answer aligns with the understanding of how to measure the difference between two quantities in this context.