Sequence

👨🏻‍🏫 學術台數學

[匿名]

2007-12-15 10:11 pm

100,90,80,70,60... 的公差是10定-10

回答 (3)

ok pan

2007-12-15 10:16 pm

✔ 最佳答案

公差是-10
d=T(2)-T(1)
=90-100
=-10

參考: me

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George

2007-12-16 6:35 am

The common difference is 10

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king fung

2007-12-15 10:18 pm

係-10呀

參考: 數學論壇

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