Problem: European art music is largely distinguished from many other non-European and popular musical forms by its system of staff notation, in use since about the 16th century. Western staff notation is used by composers to prescribe to the performer the pitches (e.g., melodies, basslines and/or chords), tempo, meter and rhythms for a piece of music. This leaves less room for practices such as improvisation and ad libitum ornamentation, which are frequently heard in non-European art music and in popular music styles such as jazz and blues. Another difference is that whereas most popular styles lend themselves to the song form, classical music has been noted for its development of highly sophisticated forms of instrumental music such as the concerto, symphony, sonata, and mixed vocal and instrumental styles such as opera which, since they are written down, can attain a high level of complexity.
Jazz and blues use ad libitum and what other ornamentation?
The answer is the following: improvisation

Problem: The legal process to change the definition of the kilogram is already underway, but it had been decided that no final decision would be made before the next meeting of the General Conference on Weights and Measures in 2011. (For more detailed information, see kilogram definitions.) The Planck constant is a leading contender to form the basis of the new definition, although not the only one. Possible new definitions include "the mass of a body at rest whose equivalent energy equals the energy of photons whose frequencies sum to 7050135639273999999♠️1356392741042 Hz", or simply "the kilogram is defined so that the Planck constant equals 6966662606895999999♠️6.626068961034 Js".
Was the Planck constant the only option for redefining the kilogram?
The answer is the following: The Planck constant is a leading contender to form the basis of the new definition, although not the only one

Problem: Bomber crews already had some experience with these types of systems due to the deployment of the Lorenz beam, a commercial blind-landing aid which allowed aircraft to land at night or in bad weather. The Germans developed the short-range Lorenz system into the Knickebein aid, a system which used two Lorenz beams with much stronger signal transmissions. The concept was the same as the Lorenz system. Two aerials were rotated for the two converging beams which were pointed to cross directly over the target. The German bombers would attach themselves to either beam and fly along it until they started to pick up the signal from the other beam. When a continuous sound was heard from the second beam the crew knew they were above the target and began dropping their bombs.
The Knickebein was the same as the Lorenz but used how many beams?
The answer is the following: two Lorenz beams

Problem: The number of entrants has increased greatly in recent years. In the 200405 season, 660 clubs entered the competition, beating the long-standing record of 656 from the 192122 season. In 200506 this increased to 674 entrants, in 200607 to 687, in 200708 to 731 clubs, and for the 200809 and 200910 competitions it reached 762. The number has varied slightly but remained roughly stable since then, with 759 clubs participating in 201011, a record 763 in 201112, 758 for 201213, 737 for 201314 and 736 for 201415. By comparison, the other major English domestic cup, the League Cup, involves only the 92 members of the Premier League and Football League.
How many clubs entered in 2005-06?
The answer is the following:
674