17. If a, b and c are all positive integers, which of the following numbers can be the value of (a+b+c)(ai b c)( a bic)(-a+b+c)?(A)44(B)46(C)48(D)50(E)52 相关知识点: 试题来源: 解析 17. 答案:(C). 解。由于a+b+c、a+b-c a-b+c,-a+b+c 的奇偶性相同,...
1.If a,b,c,d are all positive integers,and aⁿ(5次方)=b⁴,c³=d²,c-a=19,then d-b=().2.If the three rational numbers(有理数)a:b:c=2:3:5,and a²+b²+c²=abc,then a+b+c=().3.If |x-5/6|+(2y+1)²=0,then x²+y=().中文:1.如果 d 是正整数...
1.If a,b,c,d are all positive integers,and aⁿ(5次方)=b⁴,c³=d²,c-a=19,then d-b=().2.If the three rational numbers(有理数)a:b:c=2:3:5,and a²+b²+c²=abc,then a+b+c=().3.If |x-5/6|+(2y+1)²=0,then x²+y=().中文:1.如果 d 是正整数...
Zero is placed at the center of the number line. All positive integers lie on the right side of zero, and all negative integers lie on the left side of zero. The numbers get bigger as we move from left to right on the number line. Therefore, the integer on the right-hand side is ...
Positive integers (a2 + b2)/(ab + 1) are squares, preprint - Harborth - 2002 () Citation Context ...thematical Olympiad asked the participants to prove that if a and b are positive integers for which (1.1) k = a2 + b2 ab + 1 is an integer, then k must be the square of an...
Suppose that a, b, and c are all positive integers, if ca+b 相关知识点: 试题来源: 解析 由ca+b<ab+c<bc+a,a,b、c 均为正数,可知 c+ab<b+ca<a+bc, 故可知 a+cb+1 <b+ca+1<a+bc+1,即 a+b+cb<a+b+ca<a+b+cc, 故有 c<a...
If all positive integers with tens digit are arranged in ascending order, what is the position of ? 相关知识点: 试题来源: 解析 . 十位数字是的正整数从小到大排列为: ,,,共有个数字; ,,,有个数字; ,,,共有个数字; ,,,共有个数字;个数; ,,,共有个数字; ,,,共有个数字; ,,,共有个数字...
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If a,b are positive integers, maximum value of bge(x−a)a(x−b)b occurs at x = Aa+b2 B√ab C2aba+b Dloga+logbSubmit Let x, y be positive real numbers and m, n be positive integers, The maximum value of the expression xmyn(1+x2m)(1+y2n) is A12 B14 Cm+n6mn D1Subm...
Whole numbers are the set of numbers that we use to count, such as 0, 1, 2, 3, 4... Whole numbers include all positive integers, including zero, but do not include any negative numbers. Additionally, whole numbers do not include numbers expressed as fractions or decimals. The set of...