P(2) = 2/12 = 0.1667

P ( 2 ¯ ) = 1 – P(2) = 1 – 0.1667 = 0.8333 = 10/12

P ( 1 | 2 ¯ ) = 1/10 = 0.1

P ( 1 ¯ | 2 ¯ ) = 1 – P ( 1 | 2 ¯ ) = 1 – 0.1 = 0.9 = 9/10

P(1|2) = 0/2 = 0

P ( 1 ¯ | 2 ) = 1 – P(1|2) = 1 – 0 = 1 = 2/2

P ( 1 2 ¯ ) = P ( 1 | 2 ¯ ) × P ( 2 ¯ ) = 1/10 × 10/12 = 0.0833 = 1/12

P ( 1 ¯ 2 ¯ ) = P ( 1 ¯ | 2 ¯ ) × P ( 2 ¯ ) = 9/10 × 10/12 = 0.9167 = 9/12

P(12) = P(1|2) × P(2) = 0/2 × 2/12 = 0 = 0/12

P ( 1 ¯ 2 ) = P ( 1 ¯ | 2 ) × P(2) = 2/2 × 2/12 = 0.1667 = 2/12