The janitor at a school discovered a leak in a pipe. The janitor found that it was leaking at a rate of 6 fl oz. per minute. How fast was the pipe leaking in gallons per hour?

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible