Ta có :
a,bc . xx = 77.33
=> abc : 100 . x . 11 = 77,33
=> abc . x = 77,33 . 100 : 11
=> abc . x = 703
Mà 703 là số nguyên tố
=> Ư ( 703 ) = { 1 ; 703 }
Mà x \(\ne\)703
=> x = 1
=> abc = 703
=> a,bc = 7,03
Vậy x = 1 và a,bc = 7,03
Các câu hỏi tương tự
Bai 7; Tim X va so thap phan a,bc? biet ; a,bc x XX =77,33
1.Tim 2 so thap phan biet thuong cua chung bang hieu cua chung va bang 0,75
2.Tim 2 so thap phan biet thuong cua chung bang hieu cua chung va bang 1,25
3.Tim 2 so thap phan biet thuong cua chung bang tong cua chung va bang 1,5
Cau 1 ; Tim 2 so biet thuong cua chung = 0,4 va biet hieu cua chung = 23,4
Cau 2; Tim so du cua phep chia 46,68 : 15 neu chi lay thuong co 2 chu so o phan thap phan
Cau 3; Tim 2 so thap phan biet thuong cua chung = tong cua chung va = 1,5. [ phai viet ket qua la so thap phan gon nhat ]
tim so thap phan lon hon 6 va be hon 7 biet rang so do co hai cho so khac o phan thap phan va tong cac chu so o phan thap phan bang chu so o phan nguyen
tim so thap phan a biet neu chuyen dau phay cua so a sang trai 1 hang ta duoc so b va sang ben phai 1 hang ta duoc so c va A+B+C=259,74
giai giup toi : khi cong 1 so thap phan, mot ban hoc sinh da quen danh dau phay o so thap phan va dat phep tinh cong nhu so tu nhien nen tong la 404. tong dung la 134,72. tim so tu nhien va so thap phan do, biet so tu nhien co 3 chu so va so thap phan co phan nguyen gom 1 chu so ?
tim so thap phan ab,cd biet
ab,cd * 2=dc,ba
khi cong 1 so tu nhien voi 1 so thap phan ma phan thap phan co 2 chu so ban hoa da bo quen dau phay o phan thap phan va dat tinh nhu cong so tu nhien nen duoc ket qua la 2015 tim so thap phan biet tong dung la 177.56
tim so thap phan A biet neu dich chuyen dau phay cua A sang ben trai 1 hang ta duoc so B va sang phai 1 hang ta duoc so C va A+B+C=259,74