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(iv) KOHSEI (Basic Art & Design) using a harmony progression Since each term is expressed by a fraction, it is
used by converting to a decimal. In the progression, each term decreases,
and the first term is large, the second term reduces rapidly, and the variation
will be very small after that. These factors make us feel that the progression
is a little difficult to use since these characteristics are different
from other general progressions. However, the calculation isn't difficult
since electronic calculators are widely used today.
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