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The probability of rolling a number less than 5 on a 6-sided dice is 4/6 or 2/3.
The probability of rolling a number less than 6 on a 6-sided dice is 5/6.
Therefore, the probability of rolling a number less than 5 and then rolling a number less than 6 is (2/3) * (5/6) = 10/18 = 5/9.