If a and b are positive integers, what is the value of a+ b ?() (1); (2)The greatest common divisor of a and b is 1. A.条件(1)充分,但条件(2)不充分. B.条件(2)充分,但条件(1)不充分. C.条件(1)和(2)单独都不充分,但条件(1)和条件(2)联合起来充分. D.条件(1)充分,条件...
1If the product of three consecutive positive integers is 336,what are these three positiveintegers?①If the product of three consecutive positive integers is 336,what are these three positive integers? 2【题目】If the product of three consecutive positive integers is 336, what are these three...
What is the positive difference between the sum of the first 100 positive integers and the sum of the next 50 positive integers?( )A.1000B.1225C.2025D.5050 答案 B前100个正整数和后50个正整数的和的差是多少?前100个正整数的和:1+2+3+⋯+100=(1+100)×100÷2=5050,后50个正整数的和:...
consecutive positive integers is a prime number. What is the least possible sum of these integers?( )A. 65 B. 77 C. 127 D. 129 相关知识点: 试题来源: 解析 A 本题题意为“10个连续的正整数中最大的一个是质数,这些整数的最小和是多少?”, 根据题意可知,10个数中最大是质数,并且这些数的...
What is the least positive integer that is divisible by each of the integers 1 through 7, inclusive ?() A.420 B.840 C.1,260 D.2,520 E.5,040 相关知识点: 试题来源: 解析 A [解析] 该题也即让考生求1,2,3,4,5,6和7这7个数的最小公倍数。根据最小公倍的求解公式可得其最小公...
What is the greatest commom divisor of positive integers m and n ?() (1)m is a prime number. (2)m and n are consecutive integers. A.条件(1)充分,但条件(2)不充分.B.条件(2)充分,但条件(1)不充分.C.条件(1)和(2)单独都不充分,但条件(1)和条件(2)联合起来充分.D.条件(1)充分,条件...
The resultant integer will have the same sign as the given integers.For example:$7 + 3 = 10$ Here, 7 and 3 are positive. So, the answer is +10 or simply 10.$(–7) + (–3) = –10$ Here, the absolute values are 7 and 3. Their sum is 10. Since both the numbers have a ...
If p and q are positive integers, what is the value of q ?() (1)qp-1=1 (2)p=1 A.条件(1)充分,但条件(2)不充分. B.条件(2)充分,但条件(1)不充分. C.条件(1)和(2)单独都不充分,但条件(1)和条件(2)联合起来充分. D.条件(1)充分,条件(2)也充分. E.条件(1)和条件(2)单独都不...
and are positive integers such that . What is the minimum possible value of ?( ) A: B: C: D: E: 相关知识点: 试题来源: 解析 D must be a perfect cube, so each power of a prime in the factorization for must be divisible by . Thus the minimum value of is , which makes . Thes...
1If x and y are positive integers such that x=8y+12,what is the greatest common divisor of x and 1) x=12u,where u is an integer2) y=12z,where z is 由题知:x=4(2y+3)由(1)知:x=12u 则y=3k k is an integer.x=12(2k+1) 则x,y最大公因子不能确定.由(2)知:y=12z 则...