C2: timf 2 soos tuwj nhieen a vaf b b't tichs cuar chungs lak 2940 vaf bcnn cuar chung lak 210
dichj nhes ( bcnn : booij chung nhor nhaats )
Timf soos tuwj nhieen nhor nhaast cos ba chuxw soos chia cho 11 duw 5, chia cho 13 duw 8
Giups minhf gaasp, ai ddungs minhf tichs, khoong caanf suawr laij ddeef ddaau, minhf chir caafn loiwf giair vaf ddaps ans thooi nha moij nguoiwf. GAAPS GAAPS GAAPS
timf a/b bằng
36/45 biết ƯCLN (a , b) = 31
Cho a, b laf cacs SNt vaf UCLN ( a, b)=1 CMR
UCLN(a+b,a-b)=1
Cho A=ab/a+b
Timf GTLN, GTNN
Timf hai soos tuwj nhieen a vf b sao cho BCNN(a,b) = 3.ƯCLN(a,b) và a.b = 1200
so sánh A vaf B; A=\(\frac{2}{60.63}\)
so sánh A vaf B :
A=9/10!+9/11!+.....+9/100! và B= 1/9!
Timf a, b , c
a2 = b + 1
b2 = c + 1
c2 = a + 1