← mixed practice iv cards you don't know will reappear later

you should create an account to save your progress. it only takes a minute!
new card

a shortcut rule:

suppose a scenario involve n repeated trials, and suppose a is one possible outcome of each trial. p(at least one a in n trials) = ?

click to see back →
new card

p(at least one a in n trials) = 1 – p(no occurrences of a in n trials)

i knew this card i didn't know this card
you have mastered 0 out of 37 cards
you are reviewing 0 out of 37 cards
you are learning 0 out of 37 cards

have feedback about this card? please email help@www.catharsisit.com