issb mathematics MCQ #96

Navy signal flags change every 45 seconds and 60 seconds. After how many seconds will both flags show the same pattern together again?

issb mathematics MCQ #96

  1. Question 1

    Q1. Navy signal flags change every 45 seconds and 60 seconds. After how many seconds will both flags show the same pattern together again?

    • A) 120 seconds
    • B) 180 seconds
    • C) 90 seconds
    • D) 225 seconds

    Answer: 180 seconds

    Explanation: The flags align again at the LCM of 45 and 60. That value is 180 seconds.