Skip to content / Đến nội dung
ThichHocToan.com

SEAMO 2027 - Paper E - SET 04 - Self-study Question 13

SEAMO · SEAMO 2027 - Paper E - SET 04 - Self-study

Question 13

Given $a+2b+c=4$ for real numbers $a,b,c$, find the maximum value of $ab+bc+ca$.
  1. $2$
  2. $4$
  3. $6$
  4. $8$
  5. None of the above