NẾU 1 1 1 ... ( )( 1 ) ( 1,2,3... )1111.M ³ 2M > 2. D. . C. . B....

Câu 67: Nếu 1 1 1 ... ( )( 1 ) ( 1,2,3... )

1

.

M ³ 2

M > 2

. D.

. C.

. B.

M < 2

A.

M £ 2