Question

In four schools \( B_1, B_2, B_3, B_4 \), the number of students is given as follows: \[ B_1 = 12, \quad B_2 = 20, \quad B_3 = 13, \quad B_4 = 17 \] A student is selected at random from any of the schools. The probability that the student is from school \( B_2 \) is:

• A. \( \frac{6}{31} \)
• B. \( \frac{10}{31} \)
• C. \( \frac{13}{62} \)
• D. \( \frac{17}{62} \)

Hint:

To find the probability of selecting an element from a specific group, use the ratio of favorable outcomes to total outcomes.