Các câu hỏi tương tự
Mot so nguyen Aco dang 3k+5 [k nguyen] thi -a co dang 3m+n [m;n nguyen] .Neu 0_<n<3 thi n=
ch k la mot so nguyen co dang k=3k+7 hoi k co the nhan nhung gia tri nao trong cac gia tri sau 11,2011,1150,22789,199537
tim mot so tu nhien co 3 chu so ,biet neu viet them chu so 8 vao dang truoc dang sau so do thi ta duoc 2 so co 4 chu so nhung so viet dang truoc lon hon so dang sau 5778 don vi
tim so tu nhien co bon chu so biet rang so do co the phan tich thamh tich cua hai thua so co tong bang 100 va mot trong hai thua so ay co dang a^a
Viet dang tong quat cua mot so tu nhien
a) Co hai chu so
chung to rang
a]so co dang aaa chia het cho 37
b]so co dang abcabc chia het cho 7
c]so co dang aaaa chia het cho 101
d] so co dang abba chia het cho 11
viet dang tong quat cua mot so tu nhien :
a) co 2 chu so
b) co 3 chu so
c)
tim mot so co namchu so,biet neu viet them chu so 7 dang truoc so do thi duoc so gap 5 lan so co duoc khi viet them chu so 7 vao dang sau so do
co bao nhieu so co dang ab thoa man ab+ba la mot so chinh phuong