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Question
a die is rolled twice. what is the probability of showing a 1 on the first roll and an even number on the second roll? your answer is :
Step1: Probability of first roll (1)
A die has 6 faces. Probability of rolling a 1: $\frac{1}{6}$.
Step2: Probability of second roll (even)
Even numbers on a die: 2,4,6 (3 outcomes). Probability: $\frac{3}{6}=\frac{1}{2}$.
Step3: Multiply probabilities (independent events)
Since rolls are independent, multiply the two probabilities: $\frac{1}{6} \times \frac{1}{2} = \frac{1}{12}$.
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$\frac{1}{12}$