Evan has equal numbers of pop songs jacksons and rock songs loaded on his personal music player he has it set to play songs on a random shuffle suppose Evan is designing a simulation that could be used estimate the probability of the next 2 signs are both jazz songs which to mute simulation design could avenues estimate the probability​

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?