考古題 DS.Form 30# 15

由 **hoojjj** » 2005-04-18 10:28

if eacg of the positive ontegers a, b, c, is a prime number and abc=30. what is the value od c?
1) a<b<c
2) a/b=c

Ans:D

why D what is value of a, b, c??????

由 **hoojjj** » 2005-04-18 11:07

會部會答案錯了???

由 **micht** » 2005-04-18 20:51

奇怪我怎麼找不到這一題請問確定是Form 30-15?

我以為abc=235

由 **DARY** » 2005-04-18 21:31

hoojjj \$m[1]:if eacg of the positive ontegers a, b, c, is a prime number and abc=30. what is the value od c?
1) a<b<c
2) a/b=c

Ans:D

why D what is value of a, b, c??????

照答案D看來
(2)應該是a+b=c

由 **global1018** » 2005-04-18 23:23

DARY \$m[1]:
hoojjj \$m[1]:if eacg of the positive ontegers a, b, c, is a prime number and abc=30. what is the value od c?
1) a<b<c
2) a/b=c

Ans:D

why D what is value of a, b, c??????

照答案D看來
(2)應該是a+b=c

同意!
由abc=30,且abc都是質數
求得a.b.c一定是2.3.5(順序不定)
至於c是哪一個就要靠(1)和(2)a+b=c來確認

由 **hoojjj** » 2005-04-19 11:57

I apporicate that

考古題 DS.Form 30# 15

考古題 DS.Form 30# 15

Re: 考古題 DS.Form 30# 15

Re: 考古題 DS.Form 30# 15

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