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trời ơi câu hỏi gì mà dễ quá đi
mấy câu hỏi này mình đi học hè biết hết rồi
171000 = 2811391829027400931732551934605164335709939008896134392779037946871967835100469510841976271398729602670728875271227225143323718929452892187911383661665158632699262017614946963739146029379874086783044756457349492116004553784508286269283647495798480174044261292246662362713472283228486120774656462472380583219981857229034312117091477420875578726231253895638318343456660872718206165192110270143905221898754163576269276572010816095263260817220948340623595309376585372070867917852376683812342905243522761873465455367098276532974131106551815516189866603499268711175124332254334397749971821196186760872494614648061415417984698014634795042320517034078594796010868243042442485299107886672928059270876867171267831530399591031672244191840287541278128732015340120594923749342393074391429971432275154089658386186886562186949634708768160018523655064565357831590439918261830415973880667684156129451934826684090225384023806018779931512164684420366955776304834836676610481660531176740836683497882125178129029010048291340449676303450318069953578251754174731241852241210129097307136684712717421920425950537362157129714163094405913841999714664413656102204593696100992308399469046000758461236920885995622135010992460595646842399231411743861598856080001
vậy tần cùng của 17^1000 là 1
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Hỏi ngu
1.sao chia 2 du 3 dc,the thanh du 1 roi
2.neu so do la x thi lam sao co h dc
phai co > 2 so moi co h
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Có A = \(\frac{2n-1}{n+3}=\frac{2\left(n+3\right)-7}{n+3}=2-\frac{7}{n+3}\)
Để A nguyên
=> \(\frac{7}{n+3}\) nguyên => 7 chia hết cho n + 3
n+3 | 1 | -1 | 7 | -7 |
n | -2 | -4 | 4 | -10 |
A=2 (n + 3 ) - 7 / n+ 3
để A là số nguyên suy ra 7 chia hết cho n+ 3
suy ra n+ 3 thuộc ước của 7
suy ra n+3 thuộc 1;-1;7;-7
suy ra n thuộc -2;-4;4;-10
Ta có: \(\frac{1}{2}+\frac{1}{-3}+\frac{1}{4}+\frac{1}{6}\)
\(=\frac{1}{2}-\frac{1}{3}+\frac{1}{6}+\frac{1}{4}\)
\(=\frac{1}{6}+\frac{1}{6}-\frac{1}{4}\)
\(=\frac{1}{3}+\frac{1}{4}=\frac{7}{12}\)