cho a⋮b , b⋮c . tim UCLN ( a,b,c ) va BCNN ( a,b,c)
tim so tu nhien nho nhat chi chua thua so nguyen to 2 va 5 biet khi chia no cho 2 thi duoc mot so chinh phuong
Tim cac so tu nhien a , b , c , d , thoa man 1/ a*a + 1/b*b + 1/c*c + 1/d*d =1
Bai 1: Tim 3 so nguyen to a, b, c khac nhau sao cho abc < ab + bc + ac
Bai 2: Tim 4 so tu nhien sao cho tong nghich dao cac binh phuong cua chung bang 1.
Moi nguoi trinh bay day du giup minh nhe! (Love)
cho mot so tu nhien va mot so thap phan co tong bang 2032,11 .Bo dau phay cua so thap phan di thi tong se bang 4023 .Tim so thap phan do.Tra loi: So thap phan do la........
cho phan so a/b khac 0, toi gian.biet rang neu cong ca tu so va mau so voi tu so cua phan so cua phân so da cho thi duoc phan so moi bang mot nua phan so da cho.khi do gia tri cua hieu a-b la..........................................
tinh tong :
a, \(\dfrac{1}{n}\) -\(\dfrac{1}{n+a}\) voi a;n la so tu nhien va n khac 0
cho B la so tu nhien . biet B = ax -by ; a;b la cac so nguyen to khac nhau ;x,y la hai so tu nhien khac 0 . B2 co 15 uoc hoi B3 co bao nhieu uoc
so cap so tu nhien a;b thoa man a/2+b/3=a+b/5