3. On the eye of the holidays= you are going to hang two strings ofcoloiil hghts on the tree in ont of your house- The rst ashing of the two strings of colored ghts are independent of each other: and may occur at any time umformly within 4 seconds after poweron, and then each string of colored lights ashes at an interval of4 seconds. che two strings of colored lights are energized at the same time, what is the probability that the difference between their first ashing moments is no more than 2 seconds