gmat 数学算术练习题.docx

If y is the smallest positive integer such that 3150 multiplied by y is the square of an integer ,then y must be256714If x is the product of the positive integer from 1 to 8,inclusive, and if, i, k, m, and p are positive integers such that x=2i3k5m7p , then i+k+m+p=4781112How many factor does 360 have?243648120360The greatest common divisor of a and b is 21 and the least common multiple of a and b is 126, where a and b are positive integers, what is the sum of a and b?105147150105 or 147105 or 150If M is the least common multiple of 90, 196, and 300, which of the following is NOT a factor of M?60070090021004900Three sorts of juices are served at a party. Every 2 guests share a bottle of apple juice, every 3 guests share a bottle of lemon juice, and every 4 guests share a bottle of orange juice. If 65 bottles of juices are drunk off finally, how many guests are at this party?1224364860If n is a positive integer what is the remainder when 38n+3+2 is divided by 5?01234If n is an integer greater than 6, which of the following must be divisible by 3?n(n+1)(n-4)n(n+2)(n-1)n(n+3)(n-5)n(n+4)(n-2)n(n+5)(n-6)The product of two consecutive positive integers cannot bea prime numberdivisible by 11a multiple of 13an even number less than 10a number having 4 as its units digitWhich of the following fractions has a decimal equivalent that is a terminating decimal?10/18915/19616/22525/14439/128Of the following which best approximates (0.1667)(0.8333)(0.3333)/(0.2222)(0.6667)(0.1250)?2.002.402.432.503.43If 1050-74 is written as an integer in base decimal notation, what is the sum of the digits in that integer?424433440449467Among registered voters in a certain district, the ratio of men to women is 3:5. Of the district currently includes 24000 registered voters, how many additional men must register to make the ratio 4:5?20003000400050006000A certain fraction is equivalent to 2/5. If the numerator of the fraction is increased by 4 and the denominator is doubled, the new fraction is