Emmitt is grilling hotdogs for a cook out he has 7 plates and put 4 hot dogs on each plate which of the following is NOT a way to find out how many hot dogs emmitt has grilled

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?