# Rolling a fair six-sided die
p_two = 1 / 6
p_five = 1 / 6

# A single roll can't show a 2 and a 5 at the same time -> mutually exclusive
p_two_or_five = p_two + p_five
print(f"P(2 or 5) = {p_two_or_five:.4f}")

# Output:
# P(2 or 5) = 0.3333