์ฒญ์‚ฐ ๋‹นํ•œ์• ๋“ค์ด ๋„ˆ๋ฌด ๋งŽ์€๋ฐ

๋‹ค๋“ค 10~50 ์—ฌ์œณ๋ˆ์œผ๋กœ ์ฒญ์‚ฐ๋‹นํ•˜๋‚˜?