Tổng của các chữ số có các chữ số giống nhau là:
a.945 b. 505 c. 459 d. 495
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CM
12 tháng 8 2018
Số lớn nhất trong các số 459 495; 459 549; 549 954 và 549 945 là 549 954.
Chọn C.
10 tháng 1 2021
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22 tháng 4 2018
a) 3100=(32)50=950<1050=100000...000(50 c/s 0 ) =>tổng các c/s của 950<9+9+9+.......+9 (50 số hạng
Ta có:950=1050-n.(n>1;n thuộc N*) =>tổng các c/s của 950<450
=>950<1050-1 Vì 450<459=>tổng các c/s của 950<459(ĐPCM)
=>950<999..999 (50 c/s 9)
=>tổng các c/s của 950<tổng các c/s của 999..999
12 tháng 2 2016
3100=(32)50=950.
3100 có 50 chữ số. Tổng là 9.50=450( ko bằng 459)
Suy ra Tổng các chữ số của B,C là 450
Ủng hộ mk nha