If the birth death and immigration lights flashed at the same time how many seconds would pass before they flashed together again Is this less than or greater than 1 hour?

Answer 1

To determine when the birth, death, and Immigration lights would flash together again, we need to find the least common multiple (LCM) of the intervals at which they flash. Assuming the lights flash at intervals of 5 seconds (birth), 10 seconds (death), and 15 seconds (immigration), the LCM of these intervals is 30 seconds. Since 30 seconds is less than 1 hour, they would flash together again in that time span.