本版推荐：

jasontomonaga
 
等　级：黄金词友

              积　分：2281分

        专家分：49分

看我其他帖子
看我的日志

        看我该帖回复

主题：[The Official SAT Question of the Day™] November 26th Wednesday

点击:361 | 回复:2 | 标签:

|n + 1| < 4

How many integers n satisfy the inequality above?

A. One
B. Two
C. Four
D. Seven
E. Eight

SAT题目：http://apps.collegeboard.com/qotd/question.do

楼主 Date: 2008-11-26 19:16:49

jasontomonaga

看我其他帖子
看我的日志

		看我该帖回复

Hint : If |n + 1| < 4, and n is an integer, then the possible values of n + 1 are the integers between –3 and 3, inclusive.

沙发 Date: 2008-11-26 19:17:35

jasontomonaga

看我其他帖子
看我的日志

		看我该帖回复

Correct Answer: D

Here's Why: If |n + 1| < 4, and n is an integer, then the possible values of n + 1 are the integers greater than or equal to –3 and less than or equal to 3, so the possible values for n are –4, –3, –2, –1, 0, 1, and 2. Therefore, there are seven integers n that satisfy the given inequality.
Difficulty: Hard
Question Type: Standard Multiple Choice
(Mathematics)

板凳 Date: 2008-11-26 19:18:34

参与讨论