What is a counterargument? an argument that is in opposition to the writer’s thesis
a statement of the writer’s position
a summary of the writer’s main points
an assumption that connects the grounds to the claim

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?