Four students in a study group circled three adjacent numbers on a column in the calendar. Calculate their sums to be 33, 45, 49, 54 respectively, which one is definitely wrong?
某学习小组的四位同学分别在月历中的某列上圈出相邻的三个数．算出它们的和分别是33，45，49，54，其中和肯定不对的是哪个？
<result>49</result>