
ա) Այո
բ) Ոչ
գ) Ոչ
դ) Այո

P(A) = 4/6 = 2/3
P(B) = 2/6 = 1/3
2/3 * 1/3 = 2/9

A = {2, 3, 5}
B = {2, 4, 6}
P(A) = 3/6 = 1/2
P(B) = 3/6 = 1/2
1/2 * 1/2 = 1/4
1/4 = 0.25

0.8 * 0.3 = 0.24

1 — 0.7 = 0.3
0.5 * 0.3 = 0.15

P(A Ո B) = P(A) * P(B)
P(A Ո B) = 0.4 * 0.2 = 0.08
——
P(A Ս B) = P(A) + P(B) — P(A Ո B)
P(A Ս B) = 0.4 + 0.8 — 0.08 = 0.52

P(A Ո B) = P(A) x P(B)
0.1 = 0.25 x P(B)
P(B) = 0.25/0.1 = 2.5
P(A Ս B) = 0.25 + 2.5 — 0.1 = 2.65