À̱â·Á¸é ÁöÇý¸¦ Å°¿ö¶ó!(65ȸ)
2023-04-13 ¿ÀÀü 12:19:07 | Á¶È¸ : 650
À̱â·Á¸é ÁöÇý¸¦ Å°¿ö¶ó!(65ȸ)
...
<Á¦ 065 ȸ> : ¾Ç¼ö
[¹®] :
15¸íÀÇ ¾ß±¸¼±¼ö°¡ ÇÑ Æ¯º°ÇÑ ÆÄƼ¿¡ ÃÊ´ë µÇ¾ú´Ù.
¾É±â Àü¿¡,
¼±¼ö °¢ÀÚµéÀº ´Ù¸¥ ¼±¼öµé°ú ¾Ç¼ö¸¦ ÇÏ¿´´Ù.
¾ó¸¶³ª ¸¹Àº ¾Ç¼ö°¡ ÀÖ¾úÀ»±î¿ä?
º¸±â :
°¡) 100 ¹ø ³ª) 105 " ´Ù) 110 " ¶ó) 115 "
[´ä] ( )
==
[q] :
fifteen baseball players were invited to a special party.
before sitting down,
each of the players shook hands with each of the other players.
how many handshakes occurred?
==
<Áß¿ä ´Ü¾î>
in.vite /in.váit/[ÀÎ.¤¾¹ÙŸæ ́]
v. ÃÊûÇÏ´Ù, ÃÊ´ëÇÏ´Ù.
• she is seldom ¡d out. ±×³à´Â ÃÊ´ë¹Þ¾Æ ¹Û¿¡ ³ª°¡´Â ÀÏÀÌ µå¹°´Ù.
[Á¤´ä ¹× Çؼ³]
Á¤´ä : ³ª) 105 ¹ø
Çؼ³ :
ù ¼±¼ö°¡ 14¸íÀÇ ´Ù¸¥ ¼±¼öµé°ú ¾Ç¼ö¸¦ ÇÑ´Ù.
µÎ ¹ø° ¼±¼ö°¡, óÀ½ ¼±¼ö¸¦ Á¦¿ÜÇÏ°í ´Ù¸¥ 13¸í°ú ¾Ç¼ö¸¦ ÇÑ´Ù.
¼¼ ¹ø° ¼±¼ö°¡, ù ¼±¼ö¿Í µÑ° ¼±¼ö¸¦ Á¦¿ÜÇÑ 12¸í°ú ¾Ç¼ö¸¦ ÇÑ´Ù.
ÀÌ·¸°Ô °è¼ÓµÈ´Ù. ±×·¡¼ ´äÀº ÀÌ·¸°Ô µÈ´Ù.
¼±¼ö : 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1
¾Ç¼ö : 14 +13 +12 +11 +10 +9 +8 +7 +6 +5 +4 +3 +2 +1 none
=105 times.
* °ø½Ä(a ula) : n(umbers/Àοø¼ö) x (n - 1) x 1/2 = shake
==