2021 Math Kangaroo Levels 3-4 Problem #19

2021 Math Kangaroo Levels 3-4 Problem #19 19. The numbers 1 to 9 are placed in the squares shown with one number in each square. The sums of two neighboring numbers are shown. Which number is placed in the shaded square? (A) 4 (B) 5 (C) 6 (D) 7 (E) 8 Thank you for watching and please subscribe if you would like to see more videos!