Toán Lớp 6: BCNN ( 6,7,8 )
A.1
B.42
C.168
D.8
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Toán Lớp 6: BCNN ( 6,7,8 )
A.1
B.42
C.168
D.8
Comments ( 2 )
6 = 2 . 3
7 = 7
8 = 2^3
=> BCNNNN(6; 7; 8) = 2^3 . 3 . 7 = 8 . 3 . 7 = 168
=> C
Ta có:
6 = 2 * 3
7 = 1 * 7
8 = 2^3
=> $BCNN(6, 7, 8)$ = 2^3 * 3 * 7 = 168
=> Chọn C