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Tim chu so tan cung
A , 6^2016
B, 9^1991
C , 3^1991
D , 2^1991
tim 2 chu so tan cung cua 2^100 ; 7^1991
tim 2 chu so tan cung cua
a)2^100
b)7^1991
tim chu so tan cung
9^9^8^7^6^5^4^3^2^1
tim chu so tan cung cua cac so sau
A=7^2006
B=9^1991
C=2^4+n+2(n thuoc tn
D=127^531
E=3^79+2014^1006
G=8^95.3^314
F=4^256-7^131
nhanh len nhe gap lam rui
Tim 2 chu so tan cung cua so 6666
Cho n2 +2n co c/s tan cung la 4.tim chu so truoc chu so cuoi cung
Tim chu so tan cung cua 6^195 va 2^1000
tim 1 so co 6 chu so tan cung la chu so 4 khi chuyen so 4 len dau con cac chu so khac giu nguyen thi ta duoc so moi gap 4 lan so cu
