DS-11-24

WalkByFaith · 发表于 2005-7-2 13:55:00

24. If b is the product of three consecutive positive integers c, c + 1, and c + 2, is b a multiple of 24 ?

(1) b is a multiple of 3,

(2) c is odd.

the answer is : A.

I thought the key should be E because even (1)+(2) can not solve the problem.

why A?

According to (1), the integers could be 1, 2, 3 or 8, 9, 10 so they could be a multiple of 24 or not.

请NN 帮忙看看, 多谢.

WalkByFaith · 发表于 2005-7-2 14:40:00

XDJM, 请帮忙看一看,自己顶一下.

happyfish0517 · 发表于 2005-7-2 15:44:00

请注明一下出处哦，最好更改一下题目，方便CDer以后搜索查找哦！，谢谢

happyfish0517 · 发表于 2005-7-2 15:50:00

我好像在哪里见过这题，（1）是不是说c是3的倍数，而不是b呢？

楼主请确认一下

WalkByFaith · 发表于 2005-7-7 06:05:00

以下是引用happyfish0517在2005-7-2 15:44:00的发言：
请注明一下出处哦，最好更改一下题目，方便CDer以后搜索查找哦！，谢谢

SORRY, I THOUGHT I PUT DS-11-24 CAN TELL THE SOURCE, CAN I DO IT LIKE THAT NEXT TIME:

DaQuan-11-24?

THANKS

WalkByFaith · 发表于 2005-7-7 06:07:00

以下是引用happyfish0517在2005-7-2 15:50:00的发言：

我好像在哪里见过这题，（1）是不是说c是3的倍数，而不是b呢？

楼主请确认一下

THE VERSION I GOT SAYS B INSTEAD OF C

WalkByFaith · 发表于 2005-7-7 06:13:00

以下是引用happyfish0517在2005-7-2 15:50:00的发言：

我好像在哪里见过这题，（1）是不是说c是3的倍数，而不是b呢？

楼主请确认一下

EVEN 1）说c是3的倍数 , THE ANSWER SHOULD NOT BE A, SHOULD IT?

IT WOULD BE E, TOO.

所属分类: GMAT考试