Statement Ⅰ must be true, because if all three variables are positive integers and x2=z2 plus the square of another positive integer, then x has to be greater than z;, plug in numbers to verify. Ⅲ must be true because the square of a positive integer is always a positive integ...
If x, y, and z are positive integers and 3x=4y=7z, then the least possible value of x+y+z is () A.33 B.40 C.49 D.61 E.84 相关知识点: 试题来源: 解析 D [解析] 若要使x,y和z都是整数且满足3x=4y=7z,则x应能被4和7整除,y应能被3和7整除,同理z要能被3和4整除,又...
If x, y and z are positive integers such that 27 x + 28y + 29z = 363, find the value of (x + y + z).
限定x和y是正整数 对于其他值没有限定
If x, y,and z are positive integers, is xz even?(1)xy is even.(2)yz is even. 选项: 答案: E Data Sufficiency 提问 最新 问个问题 我想问: 提交 最热提问 [Issue Essay]Analytical!... [Issue Essay]Analytical!... [Issue Essay]Analytical!... [Issue Essay]Analytical!... [Iss...
If x,y and z are positive integers and satisfy the following set of equations, find the sum of all possible value(s) of x+y+z. {2x+3y+4z=19x+y+3z=10相关知识点: 试题来源: 解析 14. 從第2條方程可知z只可能是1或2, 當z=1時,方程組變為{2x+3y+4=19x+y+3=10,解得{x=6y=1...
若x、y和z为正整数使得x2+y2=2xyz,求z的值.If x, y and z are positive integers such that x2+y2=2xyz.
If X, Y, and Z are positive integers, is Y>X? (1) Y^2=XZ (2) Z-X>0 䌠 选项: 答案: C
of q are 1 and 4, and 7.We are given that x and y are positive integers such that y is...
common multiple of x and y is 180.最小公倍數是180，最小公倍數是x,y的最大公因數，乘上(x...