์ฑํฐ 4. ๋ฐฐ์
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Question 1 of 2
1. Question
๊ธฐ์ค ์ฃผํ์๋ณด๋ค ๋ ๋ฐฐ ๋์ ์ฃผํ์๋ฅผ ๋งํ๋ ๊ฒ์ผ๋ก ์ฃผํ์ ๋น๊ฐ 1 : 2 ๊ฐ ๋๋ ๊ด๊ณ๋?
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Question 2 of 2
2. Question
๋ค์์ A(๋ผ) ์์ ๋ค์ ์ฅํ๋ธ ๊ฐ๊ฒฉ์ผ๋ก ๊ทธ๋ฆฐ ๊ฒ์ด๋ค. ***๋ก ํ์๋ ์์ด 440Hz๋ผ๋ฉด 110Hz๊ฐ ๋๋ ์์?
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