PP-T2-DS185

[Huang Hsin-Yi]

185. 17987-!-item-!-187;#058&011677
Of the 200 members of a certain association, each member who speaks German also speaks English, and 70 of the members speak only Spanish. If no member speaks all three languages, how many of the members speak two of the three languages?

(1) 60 of the members speak only English.

(2) 20 of the members do not speak any of the three languages.

Ans:C

不知道那位大大知道 三種交集的題目怎麼算

[pleasela]

http://www.formosamba.com/phpBB3/viewtopi ... light=GMAT

剛好在這裡找到^^

[Huang Hsin-Yi]

非常感恩,想不到沉那樣久,還找的到答案

有些小疑問
3) Of the 200 members in a club, those that speak German also speaks English會講德文的也講英文, and 70 members speak only Spanish, no members speaks all three. HOw many people speak 2 of the 3 languages?

a. 60 speaks only English
b. 20 does not speak any

總人數 = 三種語文都會的 + 只會說兩種的 + 只會說一種的 + 什麼都不會說的
根據題目三種語文都會的 = 0
只會說兩種的 ? <== 題目要我們算的
只會說一種的 => English 60人, German 0人, Spanish 70人 上面紅色如何變下面紅色的200 = 剛剛好三種都會說的0 + 剛好只會說兩種的x + 只會說一種的60+70 + 正好三個都不會說的20 <== 這是條件(1)+(2)
得出x = 40

答案是C

[pleasela]

非常感恩,想不到沉那樣久,還找的到答案

有些小疑問
3) Of the 200 members in a club, those that speak German also speaks English會講德文的也講英文, and 70 members speak only Spanish, no members speaks all three. HOw many people speak 2 of the 3 languages?

a. 60 speaks only English
b. 20 does not speak any


只會說一種的 => English 60人, German 0人, Spanish 70人 上面紅色如何變下面紅色的200 = 剛剛好

答案是C

German 0 人 是因為 會講德文的人也會講英文
所以沒有單單只會講德文的人,這些人被歸類到會講2種話的人了~

[Huang Hsin-Yi]

對歐~~~~~~
我真是呆
拜謝~~~~~

[livory]

no members speaks all three..........這是指????三種語言都會的?????

因為我看不出來題目哪裡有說三中都會的是0人!!!

[patrick8296]

答案X應該是50 為何算出來是40??! 是我觀念錯嗎?

[Philosophia]

答案X應該是50 為何算出來是40??! 是我觀念錯嗎?

50人 +1