A 4-sided die is rolled. The set of equally likely outcomes is $\{1,2,3,4\}$. Find the probability of rolling a number less than 8. The probability of rolling a number less than 8 is (Type an integer or a simplified fraction.)

Step 1 ：A 4-sided die is rolled. The set of equally likely outcomes is \{1,2,3,4\}.

Step 2 ：The question is asking for the probability of rolling a number less than 8 on a 4-sided die.

Step 3 ：Since the highest number on a 4-sided die is 4, all possible outcomes (1, 2, 3, 4) are less than 8.

Step 4 ：Therefore, the probability of rolling a number less than 8 is 1 or 100%.

Step 5 ：Final Answer: The probability of rolling a number less than 8 on a 4-sided die is \(\boxed{1}\).