Some tips:

1. ab:    first you go to a state A using input a then from A you go to state B

2. a + b: you can go to next state either by taking a as input or b as input.

3. (bc)* :  It means bc are in a loop.


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DefinitionFiber optics is the technology used to transmit information as pulses of light through strands of fiber made of glass or plastic over long