Posted by diana on .
An instant lottery scratchoff game offers a 0.04 probability of winning on any one play. Plays are independent of each other. If you play 7 times, what is the probability you win at least once?

statistics 
drwls,
That equals 1 minus the probability of never winning on any of 7 plays.
1  (0.96)^7 = 24.9%