QUES: The number of species of flowering plants is estimated to be in the range of 250,000 to 400,000. This compares to around 12,000 species of moss or 11,000 species of pteridophytes, showing that the flowering plants are much more diverse. The number of families in APG (1998) was 462. In APG II (2003) it is not settled; at maximum it is 457, but within this number there are 55 optional segregates, so that the minimum number of families in this system is 402. In APG III (2009) there are 415 families.

How is moss seen more than families in the system?
What is the answer?
ANS: unanswerable
QUES: The National Hockey League's Carolina Hurricanes franchise moved to Raleigh in 1997 from Hartford, Connecticut (where it was known as the Hartford Whalers). The team played its first two seasons more than 60 miles away at Greensboro Coliseum while its home arena, Raleigh Entertainment and Sports Arena (later RBC Center and now PNC Arena), was under construction. The Hurricanes are the only major league (NFL, NHL, NBA, MLB) professional sports team in North Carolina to have won a championship, winning the Stanley Cup in 2006, over the Edmonton Oilers. The city played host to the 2011 NHL All-Star Game.

What is the only professional sports team in North Carolina?
What is the answer?
ANS: National Hockey League's Carolina Hurricanes
QUES: For instance, a common use of a database system is to track information about users, their name, login information, various addresses and phone numbers. In the navigational approach all of this data would be placed in a single record, and unused items would simply not be placed in the database. In the relational approach, the data would be normalized into a user table, an address table and a phone number table (for instance). Records would be created in these optional tables only if the address or phone numbers were actually provided.

How is a database system rarely used?
What is the answer?
ANS:
unanswerable