Task: Question Answering
Input (English): Problem: 3 houses are available in a new flat. 3 persons apply for the houses. each applies for 1 house without consulting others. the probability that all the 3 apply for the same house is ?
Options: a. 1 / 7, b. 1 / 9, c. 2 / 7, d. 3 / 7, e. 2 / 9
Output (English): b