Answer:
Least number of equal length = 6
Step-by-step explanation:
Given : Arnold had three pieces of different colored strings that are all the same length. Arnold cut the string
Blue- 2 equal size length
Red- 3 equal size length
Green- 6 equal size length
To find : The least number of equal size lengths each color string could have
Solution : To find the least number we find the least common multiples of 2,3,6 or L.C.M of 2,3,6
Multiple of 2 = 2,4,6,8....
Multiple of 3 = 3,6,9....
Multiple of 6 = 6,12,18....
So the least number of equal length is 6.
or L.C.M of 2,3,6 = 6
Therefore, 6 is the least number of equal size lengths each color string could have.