2020 Math Kangaroo Levels 7-8 Problem #21

2020 Math Kangaroo Levels 7-8 Problem #21 21. Twelve colored cubes are arranged in a row. There are 3 blue cubes, 2 yellow cubes, 3 red cubes, and 4 green cubes but not in that order. There is a yellow cube at one end and a red cube at the other end. The red cubes are all touching. The green cubes are also all touching. The tenth cube from the left is blue. What color is the cube sixth from the left? (A) green (B) yellow (C) blue (D) red (E) red or blue Thank you for watching and please subscribe if you would like to see more videos!