Some businessmen and businesswomen were surveyed about their appointment calendars. Of the surveyed business people, 139 said they keep their business appointments on an electronic calendar, 56 keep their appointments on a paper calendar, and 23 keep both a paper calendar and an electronic calendar. Three respondents do not keep a calendar.
26. Some businessmen and businesswomen were surveyed about their appointment calendars. Of the surveyed business people, 139 said they keep their business appointments on an electronic calendar, 56 keep their appointments on a paper calendar, and 23 keep both a paper calendar and an electronic calendar. Three respondents do not keep a calendar.
A. How many business professionals were surveyed?
Find the probability that a randomly selected surveyed business professional:
B. Keeps both an electronic and a paper calendar.
C. Keeps only one type of calendar.
D. Does not keep a calendar.
E. Keeps an electronic calendar but not a paper calendar.