An n-bit binary string is a sequence of length n over the alphabet {0,1}. How many n-bit...

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An n-bit binary string is a sequence of lengthn over the alphabet {0,1}.

  1. How many n-bit binary strings are there?
  2. How many n-bit binary stringsb1,…,bn are there such thatb1b2?00? In other words, how many n-bitbinary strings don't begin with 00?
  3. How many n-bit binary stringsb1,…,bn are there such thatb1b2?00 and b2b3?11?
  4. How many n-bit binary stringsb1,…,bn are there such thatb1b2?00 and such thatb2b3?01?

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An bit binary string is asequence of length over the alphabetFirst Question How many nbit binary strings arethereThe first term of an bit binary string asequence of length can be filled bywaysThe second term of an bit binary string asequence of length can be filled bywaysThe third term of an bit binary string asequence of    See Answer
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