Choose the correct sentence which has the same meaning as the given one.

“You’d better think carefully before applying for that job.” She said to me.

A. She said me to think carefully before applying for that job.

B. She say me to think carefully before applying for that job.

C. She advise me to think carefully before applying for that job.

D. She advised me to think carefully before applying for that job.

A= 1*2+2*3+3*4+.....+199*200

3A= 1*2*3+2*3*3+3*3*4+.......+199*200*3

3A= 1*2*(3-0)+2*3*(4-1)+3*4*(5-2)+......+199*200*(201-198)

3A=1*2*3-0*1*2+2*3*4-1*2*3+3*4*5-2*3*4+.....+199*200*201-198*199*200

3A= 199*200*201

A= 199*200*67

A=........

Ta có: n + 4 ⋮ n + 1

⇒ n + 1 + 3 ⋮ n + 1

⇒ 3 ⋮ n +1

⇒ n + 1 ∈ { 1;-1;3;-3 }

⇒ n ∈ { 0;-2;2;-4}

Vậy n ∈ { 0;-2;2;-4}

 Viết phương trình mặt cầu (S) có đường kính AB với A ( 1 ; 3 ; 1 ) ;   B ( - 2 ; 0 ; 1 ) .

A.  x - 1 2 2 + y - 3 2 2 + z - 1 2 = 9 2

B. x - 1 2 2 + y + 3 2 2 + z - 1 2 = 9 2

C. x + 1 2 2 + y - 3 2 2 + z - 1 2 = 9 2

D. Đáp án khác