Phân tích :
24 = 23 . 3
40 = 23 . 5
168 = 23 . 3. 7
=> BCNN(24;40;168) = 23 . 3 . 5 . 7 = 840
Đúng 0
Bình luận (0)
Các câu hỏi tương tự
tim BCNN cua :
10.12,15
8,9,11
24,40,168
tim bcnn cua
10,12,15
8,9,11
24,40,168
Tim BCNN cua
a} 10,12,15 b}8,9,11 c}24,40,168
Tim BCNN cua
A) 10,12,20 b)8,9,11 c)24,40,168
tim bcnn cua
60va280 84va108 13va15
tim bcnn cua
10,12,15 8,9,11 24,40,168
tìm BCNN
24,40,168
Tìm BCNN
A 10,12,15
b 8,8,11
c 24,40,168
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.
tìm BCNN của :
a/ 10, 12,15
b/ 8 ,9,11
c/ 24,40,168