EasyComplementsprobability-foundations-1
Chapter 09 practice bank
100 questions:
Probability
Solve on paper first. Reveal only the final answer when you want to check yourself. There are no worked solutions in this bank by design.
34 easy 33 medium 33 advanced
EasyEqually likely outcomesprobability-foundations-2
A fair 6-sided die is numbered 1 to 6. What is P(roll at most 2)?
EasyIndependenceprobability-foundations-3
Independent events A and B have P(A)=2/10 and P(B)=3/10. Find P(A∩B).
EasyCoin sample spacesprobability-foundations-4
A fair coin is tossed 2 times. What is the probability that every toss is tails?
EasyProduct ruleprobability-foundations-5
A student has 2 shirts and 3 pairs of trousers. How many shirt-trouser outfits are possible?
EasyCombinationsprobability-foundations-6
How many unordered teams of 2 can be chosen from 6 students?
EasyDisjoint unionsprobability-foundations-7
Disjoint events A and B have probabilities 1/10 and 3/10. Find P(A∪B).
EasyConditional probabilityprobability-foundations-8
4 of 10 music students play piano. Given that a selected student studies music, what is P(plays piano)?
EasyComplementsprobability-foundations-9
An app succeeds with probability 3/10. What is the probability it does not succeed?
EasyEqually likely outcomesprobability-foundations-10