Willgood is sorting its production supply of pairs of socks. They have 346 pairs of socks. The first 100 are donated, and the rest are split up to be shipped to 9 stores. What fraction represents how many pairs of socks each store will receive? Input your answer as a mixed number.

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?