Astore wants to print flyers to advertise its grand opening a printer will charge $50 and $0.05 per flyer if the store has a budget of $100, how many flyers can the store have printed without going beyond their budget

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?