Now that you’ve gotten a little more confident, we’re going to give you the opportunity to practice "without the training wheels." When you want to check your work, you can turn to the solutions at the end. If you aren’t familiar with some of the mathematical concepts, make a note to pay particular attention to that chapter in this book; this practice set covers a wide range of topics tested on the GMAT.
On all data sufficiency problems, the answer choices are the same (as you’ve learned). We’ve put them here for your reference.
Ａ. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Ｂ. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
Ｃ. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
Ｄ. EACH statement ALONE is sufficient.
Ｅ. Statements (1) and (2) TOGETHER are NOT sufficient.

What is the average of a list of n consecutive integers
(1) The smallest number in the list is 5.
(2) n=8

整修支座作业的质量标准是（）

A.各部分清洁，无灰渣

B.活动端涂固体油脂或擦石墨涂擦均匀，无缺漏

C.支座位置平整密实，各部分相互密贴，锚栓无松动、缺少

D.排水良好，无翻浆、流锈，涂装油漆良好