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填空,84÷4=多少

84÷4=21,

84 86 88 86 84 82 80

Written exercises 书面练习 A Write responses using some or one. 模仿例句写出对应的回答,选用some或one。 Examples: Have some coffee. I've already had some. Have a banana. I've already had one. 1 Have some beer. 2 Have an apple....

哈哈,我来帮你简答!我这几天正好在学习公务员知识!这个和那个很类似! 答案是 36!具体的思路是(书上这么写的): 这个叫二级等差数列的变式!意思就是后一项减去前一项你看会得到啥 是 -14 12 -24 48 (-96) 而这个正好是个公比为-2的等比...

根据84×16=1344填空 (8.4)×(1.6)=13.44

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