October 2018 2 41 Report
Tolong di jawab point nya banyak kok Lampu merah berkedip setiap 15 detik , lampu hijau berkedip setiap 18 detik , dan lampu kuning berkedip setiap 12 detik . Ketiga lampu tersebut berkedip bersama setiap ... menit
a . 3 c . 6
b . 4 d . 12
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