The numbers 1/1,1/2,…..,1/2010 are written on a blackboard.A student chooses any two of the numbers,say x ,y,erases them and then writes down x+y+xy.He continues to do this until only one number is left on the blackboard.What is this number?

新GRE数学 For which of the following sets of numbers is the product of the three numbers lessFor which of the following sets of numbers is the product of the three numbers less than each member of the set?Ⅰ1/4,2/3,3/4 Ⅱ-1/2,-1,4 Ⅲ -2,3,5A 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 The system of numbers that nearly everyone uses cousists of the numbers from 1 to 9 and 0. Please solve these problems for me!Please please pleaseNON-SQUARESThe numbers 1,4,9,16,25,36,49,64,81,… are called the square numbers.Let’s call the omitted numbers 2,3,5,6,7,8,10,11,12,13,...the non-square numbers.The first non-square number is 一道GMAT数学题……求解……Ifthe average (arithmetic mean) of six numbers is 75,how many of the numbers are equal to 75 (1) None of the six numbers is less than 75.(2) None of the six numbers is greater than 75. List L consists of the numbers 1,根号2,x,and x^2,where x>0,and the range of the numbers in list L is 4.比较 “2” 和 “x 的大小 Write a program which asks the user for four numbers(Python)1) Write a program which asks the user for four numbers and then tells them one of the following:· That there were more even numbers than odd numbers· That there were more odd numbers than The Indians first ivented the (1 to 9) system of numbers.括号部分提问 The system of numbers （ ）the numbers from 1 to 9 and 0A：consist inB：consists inC：consist ofD：consists of 英语翻译(1) Ask your classmates for phone numbers.A.his B.her C.their(2) Listen and match the names telephone numbers.A.for B.in C.with补充：for.with 在句子中起什么作用,怎样理解. the sum of three consecutive numbers is 39.fin the numbers.let x be one numberlet x be one number,then x+2 and x+1 are other numbers.【三个连续的数的总和为39,求那3个数】求用解方程的方式 who first __ (invention)the system of numbers from 1 to 9 Find the average of all numbers from 1 to 100 that end in 2. the second of three numbers is 1 less than the first.the third number is 5 less than the second.if the first number is twice as large as the third,find the three numbers 1 Want to the aircraft head window position 2 Dont not in the aircraft wings5 can free to taste sample6 Want to the plane head window the hyphen numbers three position8 Want to the aircraft head window the hyphen numbers three position9 Want to the a 1 Want to the aircraft head window position 2 Dont not in the aircraft wings5 can free to taste sample6 Want to the plane head window the hyphen numbers three position8 Want to the aircraft head window the hyphen numbers three position9 Want to the a 一道单选英语问题many pwople came to the meeting,（） of whom left early.1the numbers 2 a number 1.The larger of two numbers is 1 more than twice the smaller.The sum of the numbers is 20 less that three times the larger.Find the numbers.2.The price of a sweater is $5 less than twice the price of a shirt.If four sweaters and three shirts cost $20