最新数学考试算术题总汇

最新数学考试算术题总汇

　　1.When a certain number is divided by 7, the remainder is 0. If the remainder is not 0 when the number is divided by 14, then the remainder must be

　　A.1

　　B.2

　　C.4

　　D.6 

　　E.7

　　答案：E

　　2.How many of the positive integers less than 25 are 2 less than an integer multiple of 4?

　　A.2

　　B.3

　　C.4

　　D.5

　　E.6

　　答案：E

　　3. If y is the average (arithmetic mean) of n consecutive positive integers, n1,what is the sum of the greatest and least of these integers?

　　A. 2y

　　B. ny

　　C. y/2

　　D. y/n

　　E.2n/y

　　答案：A

　　4.A positive integer with exactly two different divisors greater than 1 must be

　　A. a prime

　　B. an even integer

　　C. a multiple of 3

　　D. the square of a prime

　　E. the square of an odd integer 

　　答案：D

　　5.What is the least prime number greater than 83?

　　A.85

　　B.87

　　C.88

　　D.89

　　E.91

　　答案：D

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