解一道有英语的奥数题:The sum of n different positive integers is less than 50.The sum of n different positive integers is less than 50.The greatest possble value of n is( )A.10 B.7 C.8 D.9其中positive integers 是正整数的意思.求
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/29 21:56:09
![解一道有英语的奥数题:The sum of n different positive integers is less than 50.The sum of n different positive integers is less than 50.The greatest possble value of n is( )A.10 B.7 C.8 D.9其中positive integers 是正整数的意思.求](/uploads/image/z/8649380-20-0.jpg?t=%E8%A7%A3%E4%B8%80%E9%81%93%E6%9C%89%E8%8B%B1%E8%AF%AD%E7%9A%84%E5%A5%A5%E6%95%B0%E9%A2%98%EF%BC%9AThe+sum+of+n+different+positive+integers+is+less+than+50.The+sum+of+n+different+positive+integers+is+less+than+50.The+greatest+possble+value+of+n+is%28+%29A.10+B.7+C.8+D.9%E5%85%B6%E4%B8%ADpositive+integers+%E6%98%AF%E6%AD%A3%E6%95%B4%E6%95%B0%E7%9A%84%E6%84%8F%E6%80%9D.%E6%B1%82)
解一道有英语的奥数题:The sum of n different positive integers is less than 50.The sum of n different positive integers is less than 50.The greatest possble value of n is( )A.10 B.7 C.8 D.9其中positive integers 是正整数的意思.求
解一道有英语的奥数题:The sum of n different positive integers is less than 50.
The sum of n different positive integers is less than 50.The greatest possble value of n is( )
A.10 B.7 C.8 D.9
其中positive integers 是正整数的意思.
求奥数和英语都特厉害的大师相救啊!
回答时顺便列一下式子啊!
解一道有英语的奥数题:The sum of n different positive integers is less than 50.The sum of n different positive integers is less than 50.The greatest possble value of n is( )A.10 B.7 C.8 D.9其中positive integers 是正整数的意思.求
n个不同的正整数和小于50,那么这个n的最大可能值为9
,这几个数是从1到9,总和是45=(1+9)*9/2
n个不同的正整数和小于50,那么这个n的最大可能值为9
这几个数是从1到9,总和是45=(1+9)*9/2
所以选B
正D