tich cua day 3 * 3 * 3 ..... * 3 ( co 2014 thua so 3 ) co chu so tan cung la bao nhieu
vi tich sau co chu so tan cung la so nao va co bao nhieu chu so thap phan ?0,9*1,9*2,9*3,9*.....*18,9
tich sau co chu so tan cung la chu so nao sau day
a / 3* 13 * 23 *33 * .......... *2003
b/ 9 *19 *29* 39 *............ *2009
ai nhanh minh tick cho
1)trong mot phepnhan co thua so thu hai la 64, khi thuc hien phep nhan, ban Minh da viet cac tich rieng thang cot voi nbhau nen ket qua tim duoc la 870. tim tich dung cua phep nhan
2 ) Khi thuc hien phep nhan 983 voi 1 so co 3 chu so , ban binh da dat tich rieng thu 2 thang cot voi tich rieng thu 3 nen duoc ket qua la 70776 . Em hay tim thua so co 3 chu so chua biet trong phep nhan tren , biet chu so hang tram hon chu so hang chuc 1 don vi
tich 2*12*22*......*92 co chu so tan cung la so nao
tich cua cac so le lon hon 3000 va nho hon 56789 co tan cung la chu so nao?
tich 1*5*6*11*17*28*...*118*191 co 2 chu so tan cung la nhung chu so nao
tich cua 2 x 12 x 22 x ......x 92 co tan cung la chu so nao
tong tat ca cac so tu nhien co ba chu so co tan cung la chu so nao?