(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

Đáp án A nhé

(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

\(333^{4^5}=\left(3.111\right)^{4^5}=3^{4^5}.111^{4^5}\)

\(3^{444^5}=3^{\left(4.111\right)^5}=3^{4^5.111^5}=\left(3^{4^5}\right)^{111^5}=3^{4^5}.\left(3^{4^5}\right)^{111^5-1}=3^{4^5}.\left(81^5\right)^{111^5-1}\)

\(3^{4^{555}}=3^{4^5.4^{550}}=\left(3^{4^5}\right)^{4^{550}}\)

+) Dễ có: \(3^{4^5}.111^{4^5}\) < \(3^{4^5}.\left(81^5\right)^{111^5-1}\)

=> \(333^{4^5}\)  < \(3^{444^5}\)   (1)

+) Ta có: \(\left(3^{4^5}\right)^{111^5}\) < \(\left(3^{4^5}\right)^{4^{550}}\) vì \(111^5\) < \(4^{550}=\left(4^5\right)^{110}=1024^{110}\)

=> \(3^{444^5}\) < \(3^{4^{555}}\) (2)

(1)(2) =>  \(333^{4^5}\)  < \(3^{444^5}\) < \(3^{4^{555}}\)

333-222=111
111+444=555
555-555=0
0+666=666
hc tốttttttttttt

\(333-222=111\)

\(555-555=0\)

\(111+444=555\)

\(0+666=666\)

333-222=111
111+444=555
555-555=0
0+666=666
hc tốt nha em ^_^

333 + 444 = 777

555 + 444 = 999

ủng hộ mk nhé

333 + 444 = 777

555 + 444 = 999

333+444=777

555+444=999

111 + 111 = 222

222 + 222 = 444

333 + 333 = 666

444 + 444 = 888

555 + 555 = 1110

111+111=222

222+222=444

333+333=666

444+444=888

555+555=1110

Tham khảo nha bạn

111+111=222

222+222=444

333+333=666

444+444=888

555+555=1110

\(\dfrac{555}{1110};\dfrac{333}{444};\dfrac{444}{555};\dfrac{118}{119};\dfrac{119}{120}\)

\(\dfrac{444}{555}\) = \(\dfrac{444:111}{555:111}\) = \(\dfrac{4}{5}\) = 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:

          \(\dfrac{555}{1110}\);   \(\dfrac{333}{444}\); \(\dfrac{444}{555}\); \(\dfrac{118}{119}\);  \(\dfrac{119}{120}\)

1110 + 1110 + 1110 + 1110 + 1110 = 5550

ko rảnh nha thằng kia

trả lời :

5550

đúng k bạn 

chúc bn học tốt

1665 nha em

111 + 222 + 333 + 444 + 555 = 1665

1665 là kết quả k cho mình nhé