Probability Quiz

Sample Questions

1. A fair coin is flipped three times. What is the probability of exactly two heads?
2. If A and B are independent with probabilities 1 over 2 and 1 over 4 what is P A and B?
3. A bag has 3 red and 2 blue balls. What is the probability of drawing red?
4. Two fair dice are rolled. What is the probability of a sum of 7?
5. En rettferdig mynt kastes tre ganger. Hva er sannsynligheten for nøyaktig to kron?
6. Hvis A og B er uavhengige med sannsynlighetene 1 av 2 og 1 av 4, hva er sannsynligheten P(A og B)?
7. En pose har 3 røde og 2 blå baller. Hva er sannsynligheten for å trekke en rød?

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