QUES: Returning home to Brantford after six months abroad, Bell continued his experiments with his "harmonic telegraph".[N 12] The basic concept behind his device was that messages could be sent through a single wire if each message was transmitted at a different pitch, but work on both the transmitter and receiver was needed.

For his system to work, Bell had to change what about each code?
What is the answer?
ANS: pitch
QUES: In the audition rounds, 121 contestants were selected from around 10,000 who attended the auditions. These were cut to 30 for the semifinal, with ten going on to the finals. One semifinalist, Delano Cagnolatti, was disqualified for lying to evade the show's age limit. One of the early favorites, Tamyra Gray, was eliminated at the top four, the first of several such shock eliminations that were to be repeated in later seasons. Christina Christian was hospitalized before the top six result show due to chest pains and palpitations, and she was eliminated while she was in the hospital. Jim Verraros was the first openly gay contestant on the show; his sexual orientation was revealed in his online journal, however it was removed during the competition after a request from the show producers over concerns that it might be unfairly influencing votes.

How many contestants made it past the first round of auditions?
What is the answer?
ANS: 121
QUES: The roots of Greek success in the Ottoman Empire can be traced to the Greek tradition of education and commerce. It was the wealth of the extensive merchant class that provided the material basis for the intellectual revival that was the prominent feature of Greek life in the half century and more leading to the outbreak of the Greek War of Independence in 1821. Not coincidentally, on the eve of 1821, the three most important centres of Greek learning were situated in Chios, Smyrna and Aivali, all three major centres of Greek commerce. Greek success was also favoured by Greek domination of the Christian Orthodox church.

Who held none of the wealth in the Greek society?
What is the answer?
ANS:
unanswerable