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1. |
A complete cycle of a traffic light takes 60 s. During each cycle the light is green for 25 s, yellow for 5 s and red for 30 s. At a randomly chosen time, the probability that the light will not be green is ? |
A. | 1/3 |
B. | 1/4 |
C. | 5/12 |
D. | 7/12 |
Answer» E. | |