A number cube is rolled three times in a row. Find each probabilit
17. (all + 's)
18. (odd number, then odd number, then even number)

When rolling a six-sided number cube (die), the probability of getting a ‘+’ (considering ‘+’ as a specific outcome like rolling a 6) on any single roll is . Therefore, the probability of rolling three '+'s in a row is .

For the second scenario, the probability of rolling an odd number (1, 3, or 5) is and the probability of rolling an even number (2, 4, or 6) is also . Thus, the probability of rolling odd, then odd, then even is .