19. In the figure shown below, each empty white cell is filled with an integer from
1 to 9. Each number is used at most once. The gray cell is filled with a sign
among ×, ÷, + or −. In each line with 3 numbers, the calculation is from left to
right. In the last column, the calculation is from top to bottom. Show one
possible solution.
－ ＝
×
÷ ＝
＝
＝
Bạn đang xem 19. - Đề thi Toán IMSO2018 ở Thường Châu, Trung Quốc
