Each of the letters in the word samsung are on separate cards, face down on the table. if you pick a card at random, what is the probability that it's letter will be s or u

Which strategy is used by public health to reduce the incidence of food poisoning?

What rotation was applied to triangle def to create d’e’f’?

Assume that there is a 11% rate of disk drive failure in a year. a. if all your computer data is stored on a hard disk drive with a copy stored on a second hard disk drive, what is the probability that during a year, you can avoid catastrophe with at least one working drive? b. if copies of all your computer data are stored on four independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive?