The savings account earns 8.4% apr interest calculator monthly paid into the account at the end of 6 months cooper deposits $200 into the account at the beginning of the first month at the end of each month he deposits an additional $100 how much interest will he have earned after 6 months

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?