A study suggests that 16.5% of all four-digit personal identification numbers, or PIN codes, have a repeating-digits format such as 2525. Assuming this to be true, if the PIN codes of six people are
selected at random, what is the probability that at least one of them will have repeating digits?

Every time you drive you will experience a combination of driving conditions and environments.

Find the value of x in each case. give reasons to justify your solutions! d q ∈ pr

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?