555 + 444 + 1 = ?
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![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
Ta có:
\(444^{555}=\left(111.4\right)^{555}=111^{555}.4^{555}=111^{555}.\left(4^5\right)^{111}=111^{555}.1024^{111}\)
\(555^{444}=\left(111.5\right)^{444}=111^{444}.5^{444}=111^{444}.\left(5^4\right)^{111}=111^{444}.625^{111}\)
Vì \(111^{555}.1024^{111}>111^{444}.625^{111}\) nên \(444^{555}>555^{444}\)
Vậy \(444^{555}>555^{444}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
Hãy ôn lại kiến thức phần nâng cao lớp 6:
444555=(4445)111= (45.1115)111=...
555444=(5554)111= (54.1114)111=...
Chúc bạn học ngày một vươn xa nhé!
444^555 = (111.4)^(111.5) = (111^5.4^5)^111 = (111^5.1024)^111
555^444 = (111.5)^(111.4) = (111^4.5^4)^111 = (111^4.625)^111
Vì 111^5.1024 > 111^4.625 nên (111^5.1024).111 > (111^4.625).111 hay nói cách khác 444^555 > 555^444
![](https://rs.olm.vn/images/avt/0.png?1311)
444^555 = (444^5)^111 = (111^5.4^5)^111.
555^444 = (555^4)^111 = (111^4.5^4)^111.
Do 111^5 > 111^4 va 4^5 > 5^4 nen 111^5.4^5 > 111^4.5^4
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\dfrac{555}{1110};\dfrac{333}{444};\dfrac{444}{555};\dfrac{118}{119};\dfrac{119}{120}\)
\(\dfrac{444}{555}\) = \(\dfrac{444:111}{555:111}\) = \(\dfrac{4}{5}\) = 1 - \(\dfrac{1}{5}\)
\(\dfrac{333}{444}\) = \(\dfrac{333:111}{444:111}\) = \(\dfrac{3}{4}\) = 1 - \(\dfrac{1}{4}\)
\(\dfrac{118}{119}\) = 1 - \(\dfrac{1}{119}\)
\(\dfrac{119}{120}\) = 1 - \(\dfrac{1}{120}\)
\(\dfrac{555}{1110}\) = \(\dfrac{555:555}{1110:555}\) = \(\dfrac{1}{2}\) = 1 - \(\dfrac{1}{2}\)
Vì : \(\dfrac{1}{2}>\dfrac{1}{3}>\dfrac{1}{4}>\) \(\dfrac{1}{119}\) > \(\dfrac{1}{120}\)
nên \(\dfrac{555}{1110}>\dfrac{333}{444}>\)\(\dfrac{444}{555}\) > \(\dfrac{118}{119}\) > \(\dfrac{119}{120}\)
Vậy Các phân số đã cho được sắp xếp theo thứ tự từ bé đến lớn là:
\(\dfrac{555}{1110}\); \(\dfrac{333}{444}\); \(\dfrac{444}{555}\); \(\dfrac{118}{119}\); \(\dfrac{119}{120}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
333-222=111
111+444=555
555-555=0
0+666=666
hc tốttttttttttt
\(333-222=111\)
\(555-555=0\)
\(111+444=555\)
\(0+666=666\)
![](https://rs.olm.vn/images/avt/0.png?1311)
(111 + 222 + 333 + 444 + 555 + 666 + 777 + 888 + 999)x 2.................999 x 2 x 2 x 2 ?
A.(111 + 222 + 333 + 444 + 555 + 666 + 777 + 888 + 999)x 2 > 999 x 2 x 2 x 2 = 9990 > 7992
B.(111 + 222 + 333 + 444 + 555 + 666 + 777 + 888 + 999)x 2 < 999 x 2 x 2 x 2 = 9990 < 7992
C.(111 + 222 + 333 + 444 + 555 + 666 + 777 + 888 + 999)x 2 = 999 x 2 x 2 x 2 = 9990 = 7992
![](https://rs.olm.vn/images/avt/0.png?1311)
333 + 444 = 777
555 + 444 = 999
ủng hộ mk nhé
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
1000
1000