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1 :nguoi ta viet lien nhauday so tu nhien bat dau la 1: 1 ,2, 3, 4 ,5 , hoi chu so chu 659 la chu so nao ? 2 : tim so co 3 chu so , biet rang chu so hang tram gap 4 lan chu so hang don vi va neu viet so ay theo thu tu nguoc lai thi no giam di 594 don vi.3 ; tim 2 so biet rang tong cua chung gap 5 lan hieu cua chung , tich cua chung gap 24 lan hieu cua chung4 : tim hai so biet rang tong cua chung gap 7 lan hieu cua chung con tich cua chung gap 192 lan hieu cua chung. giai theo phu...
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1 :nguoi ta viet lien nhauday so tu nhien bat dau la 1: 1 ,2, 3, 4 ,5 , hoi chu so chu 659 la chu so nao ?
2 : tim so co 3 chu so , biet rang chu so hang tram gap 4 lan chu so hang don vi va neu viet so ay theo thu tu nguoc lai thi no giam di 594 don vi.
3 ; tim 2 so biet rang tong cua chung gap 5 lan hieu cua chung , tich cua chung gap 24 lan hieu cua chung
4 : tim hai so biet rang tong cua chung gap 7 lan hieu cua chung con tich cua chung gap 192 lan hieu cua chung.
giai theo phuong phap lop 6 nhe
Bai 4 : Tìm hai so biet rang tong cua chung gap 7 lan hieu cua chung, tich cua chung gap 48 lan hieu cua chung.
Bai 5 : Tim thuong cua mot phep chia, biet rang neu them 100 vao so bi chia va them 25 vao so chia thi thuong va so du khong thay doi.
Bai 6 : Mot phep chia co thuong la 6 , du 3. Hieu giua hai so chia va so bi chia la 38. Tim hai so
tim 2 so biet tong cua chung gap 5 lan hieu vA tich cua no gap 4800 hieu
Biet rang : BCNN(a,b).UCLN(a,b)
a, BCNN cua hai so la 600, UCLN cua chung nho hon 10 lan BCNN. So thu 1 la 120, tim so thu 2.
b, UCLN cua hai so la 12, BCNN cua chung lon gap 6 lan UCLN . So t 1 la 24, tim so t 2
c, Tong cua hai so bang 60, tong giua UCLN va BCNN cua chung la 84. Tim hai so do.
Cho 61 so nguyen .Hoi tong cua 61 so nguyen do la so nhu the nao neu :
a,Tong cua 6 so bat ki trong chung la mot so nguyen am
b, tong cua 6 so bat ki trong chung la mot so nguyen duong
1,Tim hai so biet rang tong cua chung gap5 hieu cua chung tich cua chung gap 24 lan hieu cua chung
2, Tim 2 so biet rang tong cua chung gap 2 lan hieu cua chung tich cua chung gap122 hieu cua chung
Nhanh nhanh gium minh nha minh tk cho
tim 2 so biet rang tong cua chung gap 5 lan hieu cua chung , tich cua chung gap 24 lan hieu cua chung
a, Chung minh rang 5m+3 va 3m+2 la 2 so nguyen biet rang 1 so bang 10 ngen to cung nhau voi m la so nguyen to bat ky.
b,Tim 1 bo ba so nguyen to biet rang 1 so bang 10 phan tram tong cua 3 so can tim
Ai lam nhanh nhat minh tick cho
1,tim 2 so tu nhien biet tong chung = 66 UCLN=6 co 1 so chia het cho 5
2,tim 2 so tu nhien biet hieu chung = 84 UCLN = 12
3,tim 2 so tu nhien biet tich = 864 UCLN=6
4,cho 3n+1 va 5n+4 la 2 so nguyen to cung nhau tim UCLN cua 3n+1 va 5n+4
5,cho a=123456789;b=987654321 . Tim UCLN cua a va b