This is impossible, and hence the two verbal descriptions are inconsistent. Like the sample problem above, the problems that follow are in two parts. The left side contains two pieces of information from 1979 and from 2000. The right side consists of three pieces of response choices. If the evidence from 2000 is a symbol, The response choice are verbal descriptions.
Answers appear at the end of the chapter.
TWE NEL 6. NEL TWE DEK 16. DEK BIT 20.