r a DFA accepting binary numbers whose decimal equivalent is divisible by 5, how many sates the DFA would have.a.4 or 5b.5c.6d.4
Question
r a DFA accepting binary numbers whose decimal equivalent is divisible by 5, how many states the DFA would have.
- a. 4 or 5
- b. 5
- c. 6
- d. 4
Solution
The DFA (Deterministic Finite Automaton) for accepting binary numbers whose decimal equivalent is divisible by 5 would have 5 states.
Here's why:
-
The states represent the remainder of the division by 5. Since 5 can give 5 possible remainders (0, 1, 2, 3, 4), we need 5 states.
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The initial state is the state representing the remainder 0, because the number 0 is divisible by 5.
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The final state is also the state representing the remainder 0, because we want to accept numbers divisible by 5.
-
The transitions are defined by the binary input. If we are in state q (representing remainder r) and we read a bit b, we go to state q' representing remainder (2*r + b) mod 5.
So, the correct answer is b.5.
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