The probability (p) of an event "E", written formula_1, is always between zero (impossible) and one (certain).
ð ə WORD_BOUNDARY p ɹ ɑ b ə b ɪ l ɪ t i WORD_BOUNDARY p iː WORD_BOUNDARY ə v ə n WORD_BOUNDARY ɪ v ɛ n t WORD_BOUNDARY iː WORD_BOUNDARY ɹ ɪ t ə n WORD_BOUNDARY f ɔ ɹ m j ʊ l ə WORD_BOUNDARY w ʌ n WORD_BOUNDARY ɪ z WORD_BOUNDARY ɔ l w eɪ z WORD_BOUNDARY b ɪ t w iː n WORD_BOUNDARY z iə ɹ oʊ WORD_BOUNDARY ɪ m p ɑ s ɪ b ə l WORD_BOUNDARY æ n d WORD_BOUNDARY w ʌ n WORD_BOUNDARY s ɜː t ə n WORD_BOUNDARY