Final answer:
To determine the probability of selecting a junior math/science major, the specific number of juniors in that department compared to the total number of math/science majors is required, which is not provided in the question.
Step-by-step explanation:
The question relates to calculating the probability of selecting a junior out of the math/science majors at a state college. However, the provided information does not include specific numbers or percentages related to the junior class within the math/science majors. To calculate this probability, we would need to know the number of juniors in the math/science department compared to the total number of math/science students. Without this information, it is not possible to give an accurate probability. For example, if there are 140 juniors in the math/science majors out of a total of 2800 (40.9% of 7000) math/science majors, the probability of selecting a junior would be 140/2800 or 0.05 (5%).