1+2+3+4+5+6+7........+100=???
fast!!!!!!!!!!!!!!
1+2+3+4+5+6+7........+100=???
2008-05-01 5:40 am
回答 (6)
2008-06-11 2:48 am
:''''
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2008-05-02 12:51 am
5050
1+2+3+4+5...................................................+100 =5050
1+2+3+4+5...................................................+100 =5050
2008-05-01 5:53 am
[(頭+尾) x 項數]÷2
頭:1
尾:100
項數:100
[(1+100) x 100 ]÷2
=5050
頭:1
尾:100
項數:100
[(1+100) x 100 ]÷2
=5050
2008-05-01 5:49 am
答案:5050
方法:(1+100)*50(因有50個101)
方法:(1+100)*50(因有50個101)
收錄日期: 2021-04-13 15:30:44
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080430000051KK02587