Task: Question Answering
Input (English): Problem: find the probability that a number selected from numbers 1, 2, 3,..., 30 is a prime number, when each of the given numbers is equally likely to be selected ?
Options: a. 10 / 30, b. 1 / 30, c. 8 / 30, d. 3 / 30, e. 7 / 30
Output (English): c