Answer:
1/27
Step-by-step explanation:
The probabaility of rolling a number less than 3 is 2/6 = 1/3, since only two of the six numbers are less than 3.
Assuming the die rolls are independent, the probability of doing this 3 times is the product of the probabilities of doing it each time:
... (1/3)^3 = 1/27