单选题Exactly 3 deposits have been made in a savings account and the amounts of the deposits are 3 consecutive integer multiples of $7. If the sum of the deposits is between $120 and $170, what is the amoun
单选题What’s the median of 3，4，5，1，10，4，7，8?
单选题Is x positive?1x2-1=02x3+1=0
单选题If C is the temperature in degrees Celsius and F is the temperature in degrees Fahrenheit，then the relationship between temperatures on the two scales is expressed by the equation 9C=5F-32．On a day wh
单选题If x ≥ 9 and y≤5, then it must be true that
单选题Is x equal to 1?1x2=12x2-x-2=0
单选题从序列{-2，-1，0，1，2}中任选两数，这两个数可以相等，求两个数和为零的概率?
单选题Select one number from the set {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}, take down its value and then put it back. Select one number from the set again and also take down its value. If the sum of the two values
单选题Commemorative plaques cast from brass are a
单选题从1，2，3，4，…，19，20这20个自然数中，至少任选多少个数，就可以保证其中一定包括两个数.它们的差为12。
单选题If x and y are different prime numbers, each greater than 2, which of the following must be true?Ⅰ. x+y ≠91Ⅱ. x-y is an even integer.Ⅲ. xy is not an integer.
单选题The product of a positive integer a and 1080 is a square number. What is the least value of a?
单选题100个人中，88个有电视，76个有报纸，有电视没报纸的是x个，问有报纸没电视的有多少?
单选题On a road there is a tree every 46 meters. If the trees are numbered consecutively, what is the number of the tree 5060 meters past tree number 56?
单选题PhishCo runs a number of farms in the arid
单选题Bob has 40 coins consisting only of dimes and quarters. If the number of dimes is 10 more than twice the number of quarters, what is the total value of the coins.
单选题空间10个点 最多能够构成多少条直线?
单选题Parland's alligator population has been
单选题Let’s be the set of all positive integers having at most 4 digits and such that each of the digits is 0 or 1．What is the greatest prime factor of the sum of all the numbers in S?