Question

Larry used a pattern of colors to make a cube train he used a red cube a blue cube a red cube and another red cube before he started thr pattern again he used 15 cubes.how many red cubes did Larry use

Answer 1

The easiest way to determine how many red cubes would be to write the pattern and repeat it until you get to the 15th cube.

r, b , r, r, r, b, r, r, r, b, r, r, r, b , r

The answer is 11 red cubes.