Abox contains red and blue chips. there are 2 more blue chips than red chips. if the number of red chips is tripled and the number of blue chips is double, there will be an equal number of red and blue chips. how many blue chips does the original box contain?

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?