Fill in the blanks to make each of the following a true statement. also name the property exhibited by each statement.
468 + = 522 + 468
789 * = 789
(43 + 108 ) + 572 = 43 + ( + 572 )
+ 915 = 915
53 * ( 99 + ) = 53 * 99 + 53

The computer that controls a bank's automatic teller machine crashes a mean of 0.6 times per day. what is the probability that, in any seven-day week, the computer will crash less than 5 times? round your answer to four decimal places