Rolling a die — sample space is $\{1, 2, 3, 4, 5, 6\}$. The event 'a multiple of 7 appears' is:
Aa compound event
Ba simple event
Can impossible event ($\phi$)
Da sure event
Answer & Solution
Correct answer: C. an impossible event ($\phi$)
No outcome from 1–6 is a multiple of 7. So the event is $\phi$ — impossible.
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