360:a dư 14 =>360-14:a
350:a dư 26 =>350-26:a
=>346:a
=>334:a
=>a thuộc UC(346,334)
+,346=2.173
334=2.167
+,UCLN(346,334)=2
=>UC(346,334)=Ư(2)={1,2}
Nhớ nha!!!!!!!!!!!!!!!!!!!!!!!!!!
Bai1:cmr 2 stn dang 2n+3 va 3n+2 bao gio cung la 2 so nguyen to cung nhau.
Bai 2:tim 2 chu so a ; b biet (a+b)(a-b)=20.
Bai 3: tim 2 stn lien tiep co 2 chu so sao cho 1 so chia het cho 25, so kia chia het cho 4.
Bai 4: tim a;b biet a.b=360 va BCNN(a,b)=60
tim so tn a be thua hoac bang 200 biet rang khi chia a cho stn b thi duoc thuong la 41 va du 35
giup toi bai nay voi
tim so tu nhien a lon nhat .biet rang khi chia 350 cho a thi du 14 con khi chia cho 220 thi du 10
a=
Tim cac STN m, biet rang khi chia cho 5 dc thuong la 13
1) tim stn x biet rang (x+4).(23-x)=0
2) tong cac chu stn le tu 1 den 999 la
Tìm STN a nho hon hoac bang 200 biet rang khi chia a cho STN b thi duoc thuong la 4 va du 35
1 stn khi chia cho 5,7,8 deu du 2 . tim so do biet rang so do chia het cho 3
Tim STN a biet a+3 chia het a - 1