Find the value of the trig function indicated (round to the nearest tenth)

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Identify the conclusion of the conditional statement. if you live in phoenix, then you live in arizona.

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?

Can someone, me with this.i really need with this