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：2024/11/29 16:12:56
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
xJA_e돬I X vnO2L`S)b-_ffܽWh-J*.7 5VVUse6~9KuZlZ%(/@R`-D$b0 E $֐ a8DH+|ܯ.'aDȑhH<]/9ans3` kiA-޳d4[)G[>"pZyˆsKxmW݀5ѕ~E}RqU=~.:Gc;(ml#{!47X%{ݫ&>bNRyan<zݭI9S1w~4*wLfmCOmCz'y/JDxe}7ѐ@ax$˩2-Y ZxShFC

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