15. What is the least positive integer m such thatm\cdot 213!4!5!\cdot \cdot \cdot 16!is a perfect square?使得m\cdot 2!3!4!5!\cdot \cdot \cdot 16!是完全平方数的最小正整数m是多少?(A) 30(B) 70(C) 1001(D) 1430(E) 30,030 相关知识点: 试题来源: 解析 (E) 30,030 为...
包含7和14,factor 50=5*10factor 51=3*17factor 52=4*13factor 53prime 54=2*3*9,factor 55=5*11,factor 56=7*8,factor 57=3*19,factor 58=2*29,not a factor and not a prime So 58 is the least positive integer that is not a factor of 25!and is not a prime number....
What is the greatest positive integer n so that 2”is a factor of 1210 A. 10 B. 12 C. 16D. 20 E. 60 相关知识点: 试题来源: 解析 D 正整数n最大能取多少使得2n是1210的因子 将1210分解成质因子幂乘积的形式: 1210=(22×3)10=220×310 因此n最大可取20。
Thus any positive integer that can be written as asum of nine, ten and eleven consecutive positive integersmust be a multiple of 9, 5 and 11. The smallest suchnumber is 495. It is readily verified that495=51+52+⋯+59 =45+46+⋯+54 =40+41+⋯+50 Method 2:Let a be the ...
1What is the tens digit of positive integer x ?() (1)x divided by 100 has a remainder of 30. (2)x divided by 110 has a remainder of 30. 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...
百度试题 结果1 题目 122. What is the smallest positive integer n such that has exactly 55n3 positive divisors (including 1and it self)? 相关知识点: 试题来源: 解析 1375 反馈 收藏
Any integer divisible by 9 and 15 is divisible by 45. Since 45 is not even, it is not divisible by 6. So double 45 to get 90. 下面哪个正整数能同时被 6,9,15整除?( ). A.810 B.90 C.30 D.15 任意整数能被9和15整除的一定能被45整除.因为45不是偶数,所以一定不能被6整除,那么45的...
What is the smallest positive integer that is neither prime nor square and that has no prime factor less than 50?( ).A.3127B.3133C.3137D.3139E.3149 答案 A相关推荐 1What is the smallest positive integer that is neither prime nor square and that has no prime factor less than 50?( )...
【题目】12. What is the largest positive integer w for which there is a unique(独一无二的) int
B(A)90(B) 450(C)900(D)3600(E)None of the above 相关知识点: 试题来源: 解析 B273. Consider that the prime factorization of 60 is 60=2^2*3*5 . For a number to be a perfect cube, the powers of each of its prime factors must be divisible by 3 . 反馈 收藏 ...