Tim needs 3 pounds of vegetables for a vegetable soup recipe.

he already has 2/3 pound of carrots and 1/4 pound of celery.

drag the vegetables tim can add to what he already has to make exactly 3 pounds of vegetables.

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?