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ISRO | ISRO CS 2020 | Question 75
  • Last Updated : 09 Sep, 2020
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Minimum number of states required in DFA accepting binary strings not ending in “101” is
(A) 3
(B) 4
(C) 5
(D) 6

Answer: (B)

Explanation: DFA for accepting strings ending with “101” as shown below :

Now, complement of above DFA will accept binary strings not ending in “101” is :

Therefore, 4 states are required. Option (B) is correct.

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