MathematicsHardHigh School (11–12)Statistics and Probability › Conditional Probability and Bayes' TheoremAPA-LevelIBAEEE (Amrita)AMUEEEAP EAPCET
Created by StemPy LabAnanya draws cards one at a time from a well-shuffled pack of cards, without replacement, until an ace appears. What is the probability that the first ace appears on the third card?
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← Two independent alarms guard a lab. The first rings in an emergency with probability 0.4. The probability that at least one of the two rings is 0.7. What is the probability that the second alarm rings?A signal passes through three relays in a chain, and it gets through only if all three work. Each relay works independently with probability 0.9. To improve the link, an identical second chain of three relays is built beside the first. The signal gets through if at least one chain works. What is the probability that the signal gets through? →
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