Question

State which of the following events is 'certain to happen', 'impossible', 1. In traffic signals, after red, the green signal appears.
2. Today the temperature of this city will reach 40° C.
3. A bike without fuel will travel 100 km.
4. Water flows from low lying area to higher level without any external force.
5. A coin shows head after every toss. Ans: can happen but not contain . 6. The sun sets in the west.
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Answer 1

Answer:

a bike without fuel travel 100 km