question:
CDs are increasingly being replaced by other forms of digital storage and distribution, with the result that audio CD sales rates in the U.S. have dropped about 50% from their peak; however, they remain one of the primary distribution methods for the music industry.
How many CDs had been distrubuted worldwide by 2007?

answer: no

question:
It is also the study of the history of various ethnic groups that may or may not exist today.
How does an someone interested in ethnohistory learn more about cultures and customs?

answer: no

question:
During this time he contributed to the development of the Monte Carlo method, which allowed solutions to complicated problems to be approximated using random numbers.
Where were the computations for hydrogen bomb worked out?

answer: no

question:
Instruments were marketed by teacher-dealers, much as the title character in the popular musical The Music Man.
What popular musical casted a teacher-dealer?

answer:
yes