
You have a microwave oven at home, right?
You can type 3 and 0 for 30 seconds, 100 for a minute (shown as 1:00), or 200 for two minutes (2:00).
What would happen if you type 777 and Start? A) Nothing B) Self-destruction C) Will run for 7 minutes and 77 seconds (boring!)
What about 7777 ?