- [°ÀÇ]2017³â ½ÇÀü400Á¦ 358¹ø Áú¹®
- 2019-06-17
358¹ø ÁýÇÕ A={1,2,3,4,5}, B={1,2,3}¿¡ ´ëÇÏ¿© ÇÔ¼ö f:A->B°¡ ´ÙÀ½ Á¶°ÇÀ» ¸¸Á·½ÃŲ´Ù
f(1)+f(2)+f(3)+f(4)+f(5)=9
ÇÔ¼ö fÀÇ °³¼ö¸¦ ±¸ÇϽÿÀ.
(1)28 (2)32 (3)36 (4)40
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Á¶°ÇÀ» ¸¸Á·½ÃÅ°´Â °æ¿ì´Â 3+2+2+1+1 ¶Ç´Â 3+3+1+1+1 ÀÇ µÎ°¡Áö °æ¿ì»ÓÀÌ´Ù.
3+2+2+1+1°æ¿ì 30°³
3+3+1+1+1°æ¿ì 10°³
±×·¡¼ ÇÔ¼ö °¹¼ö´Â 40°³ÀÌ´Ù..ÀÌ·¸°Ô ³ª¿ÍÀִµ¥¿ä..
2+2+2+2+1ÀÎ °æ¿ì 5°³µµ ÀÖÁö ¾Ê³ª¿ä?
±×·¡¼ ´äÀÌ 45°³ ¾Æ´Ñ°¡¿ä?