Chapter 71 She Has Already Reduced Her Strength by Ninety Percent

"Are you done?"

Wu Xianfeng put down his pen, "All set."

A total of 11 questions.

The classmates looked at the problems, their interest fully piqued, and they also picked up their pens to start solving.

Wu Xianfeng adjusted his glasses, thinking what a group of good students, so eager to learn.

Lu Xue was dazzled, "What is this? I can't understand at all."

Jiang Huai asked Lu Ting, "Tingting, can you solve it?"

Lu Ting picked up her pen and did some calculations on scratch paper, "Some questions are very simple, but the last few are quite difficult, especially question 11, I have no idea what it means."

If she, a top ten student in the grade, couldn't do it, Qiao Yun was even less likely to know how.

Qiao Yun walked up to the podium.

With a pen in hand, she glanced through the questions and, almost without thinking, quickly wrote down the answers.

Her speed was so fast that Wu Xianfeng first froze, then doubted, and then his expression turned grave...