tim UCLN va BCNN cua 60,50,100
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.
tim a va b biet
A,a+b=128 va UCLN cua chung =16
B,UCLN cua a,b va BCNN cua chung =36
tim BCNN ; UCLN va BC;UC cua 46;54;112
46=2.23
54=2.33
112=24.7
UCLN(46,54.112)=2
UC(46,54,112)=U(2)=(1,2)
BCNN=24.33.23.7=68552
BC(46,54,112)=B(68552)=(0,68552,137104,....)
tim ucln va bcnn cua 14 82 124
ta có : 14=2.7
82=2.41
124=2^2.31 (^ là mũ nha)
ƯCLN(14,82,124) = 2
BCNN(14,82,124)=2^2.7.31.41= 35588
UCLN(14;82;124)={2}
con BCNN thi mik chua tim dc
Tim hai so a va b biet tong cua BCNN va UCLN cua chung la 15.
tim BCNN cua a,b =300
UCLN cua a va b =15
tim 2 so ava biet TONG CUA BCNN va UCLN CUA CHUNG LA 15
biet rang BCNN(a,b).UCLN(a,b)=a.b
a, tong cua hai so bang 60,tong giua UCLN va BCNN cua chung la 84 tim hai so do
ban trinh bay ra ho minh duoc khong thank ban
Tim UCLN , BCNN , UC , BC cua cac so 36 , 18 va 24
Bg :
-Tìm ƯCLN + ƯC :
36 = 22 . 32
18 = 2 . 32
24 = 23 . 3
\(\RightarrowƯCLN\left(36,18,24\right)=2.3=6\)
\(\RightarrowƯC\left(36,18,24\right)=Ư\left(6\right)=\left\{1,2,3,6\right\}\)
-Tìm BCNN và BC :
-Phân tích ra thừa số nguyên số như ở trên ((:
\(\Rightarrow BCNN\left(36,18,24\right)=2^3.3^2=72\)
\(\Rightarrow BC\left(36,18,24\right)=B\left(72\right)=\left\{0,72,...\right\}\)
P/s : Hok tốt a~