Question: We throw a die until a six appears for the first time, at which point the experiment stops. Let Ai be the event that the

We throw a die until a six appears for the first time, at which point the experiment stops. Let Ai be the event that the outcome of the ith throw is a six. The event “a six appears for the first time in the 3rd throw” can be expressed in terms of the sets Ai as

(a) A1A2A3

(b) A1A2A′

(c) A′

1A′

2A3

(d) A1 ∪ A2 ∪ A3

(e) A1 ∪ A2 ∪ A′

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