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 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倍...
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,并且这些数的和要最...
All positive integers are greater than all the negative integers. For example, $+17$ is greater than $-20$How to Perform Arithmetic Operations on IntegersThe four basic mathematical operations are:Addition Subtraction Multiplication DivisionAddition of Integers...
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...
if an integer is randomly selected from all positive 2-digit integers, what is the probability that the integer chosen has (a) a 4 in the tens place(b) at least one 4 in the tens place or the units place?(c)no 4 in either place?并说明原理。 相关知识点: 试题来源: 解析...
若r和s都是大于1的正整数(positive integer),且有11(s-1)=13(r-1),问r+s的最小值是多少 “the least possible value”是“最小值”的意思。一个数要想被另一个数整除.必须含有对方所含有的质数因子。由题中的已知条件可得:[*]s-1必为一个大于零的整数,所以等式右项中的13(r-1)必能被11整除,而...
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...
Positive integers x,y,and z satisfy the equations x^+ =3 and y^z=16,if z>y,what is the value of x+z?A 5 B 7 C 11 D 13 E 15x^+ =3这里好像是印刷错误,如果是印刷错误的话原题应该是什么,怎么解 相关知识点: 试题来源: 解析...