Knowing that your friend angela studies for her tests only 40 percent of the time, you place an even bet with a third party that angella will not study for her upcoming test. later, you just happen to hear that angella passed the test. should you retract your bet?

Many newspapers carry a certain puzzle in which the reader must unscramble letters to form words. how many ways can the letters of emdangl be arranged? identify the correct unscrambling, then determine the probability of getting that result by randomly selecting one arrangement of the given letters.