A firefighter stood on the m...
A firefighter stood on the middle rung of a ladder, spraying water on a burning house. He then climbed up 6 rungs before the heat of the flames caused him to come down 10 rungs. After some minutes he was able to climb 18 rungs to the very top of the ladder. How many rungs did the ladder have?Correct answers: 51
The first user who solved this task is Djordje Timotijevic.
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