這位朋友 你考GRE吧 這個(gè)題我選第三個(gè)答案,命題（2）和命題（1）是充分的
這個(gè)是要求一個(gè)數(shù)列的算術(shù)平均數(shù)占數(shù)列各數(shù)總和的百分之幾,這樣你就必須知道總和有多少,并且還要知道一共有幾個(gè)數(shù),根據(jù)（1）和（2）可算出答案是百分之十三（四舍五入后的結(jié)果）或者百分之十二點(diǎn)五.
加油啊 GRE很難考的
The average (arithmetic mean) of a list of numbers is what percent of the sum of the numbers?
The average (arithmetic mean) of a list of numbers is what percent of the sum of the numbers?
(1) There are 8 numbers in the list.
(2) The sum of the numbers in the list is 100.
Statement (1) ALONE is sufficient,but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient,but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient,but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.
(1) There are 8 numbers in the list.
(2) The sum of the numbers in the list is 100.
Statement (1) ALONE is sufficient,but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient,but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient,but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.
數(shù)學(xué)人氣：843 ℃時(shí)間：2019-11-14 09:11:23
優(yōu)質(zhì)解答
我來回答
類似推薦
- Large numbers of people pay small sum of money______an insurance company.A.to B.for
- 5 continuous natural numbers make a sum of 300.what is the largest one among the series?
- if the sum of the three continuous natural numbers is 99,the middle number is
- The sum of two even numbers is always what?
- Five numbers have a mean of six .what is their total?
- 我進(jìn)步了 作文 500字,急啊!
- 中國(guó)的三級(jí)階梯分別以什么（地形）為主?
- 某個(gè)自然數(shù)的個(gè)位的數(shù)是8,將這個(gè)8移到這個(gè)自然數(shù)左邊首位數(shù)前面,所構(gòu)成的新數(shù)是原數(shù)的8倍,原數(shù)最小是幾?
- 已知f(x)是定義在R上的奇函數(shù),且當(dāng)x>0時(shí),f(x)=3x平方+2x-1,則x
- Kate is a very __(care) girl,she often gets 100 points in her Maths exams
- “露從今夜白,_____________”,用三則成語來形容他們的思鄉(xiāng)之情.
- (x+△x)^3 = x^3 + 3x^2△x + 3x△x^2 + △x^3 //怎么得出來的?按照什么公式算的
猜你喜歡
- 1how clever you ___ A are both B both are
- 2星期六沖虎(戊寅)煞南
- 3題中“某個(gè)三角形”與“某個(gè)三角形”全等用漢字表述,各邊各角是對(duì)應(yīng)的嗎?
- 4一人生在公元前5年,死于公元后45年,活了多少歲?
- 5英語祈使句句法問題
- 6看到的星星與星光
- 72002年末，一個(gè)城市城鄉(xiāng)儲(chǔ)蓄存款余額達(dá)147億元，比2001年末增加了32億元，增長(zhǎng)百分之幾？
- 82.W_________ to our school.
- 9小明的儲(chǔ)蓄罐你有8枚一元硬幣,還有x張一元紙幣和y張5元紙幣,每種類型的紙幣至少一張,共計(jì)26元,求x和y
- 102009的三次方-2×2009的平方-2007 ÷ 2009的三次方+2009的平方-2010
- 11分子比分母大的分?jǐn)?shù)是假分?jǐn)?shù)． _ （判斷對(duì)錯(cuò)）
- 12you can swim and boat in the park否定祈使句