One pear weighs 85 grams how many pears would be in a bag weighing 1 kilogram? round to the nearest whole number if 1 kilogram costs$5 how much would one pear cost?

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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?