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À̱â·Á¸é ÁöÇý¸¦ Å°¿ö¶ó!(65ȸ)

LV47 alexÇÒ¹è

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

==

[ LV47 alexÇÒ¹è´ÔÀÇ °Ô½Ã±Û ´õ º¸±â (Ŭ¸¯!) ]

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2023-04-13 ¿ÀÀü 12:25:56