Consider the following sets: S1. Set of all recursively enumerable languages…

GATE · 2019 · CS · Computer Science & IT

Consider the following sets:

S1. Set of all recursively enumerable languages over the alphabet {0,1}

S2. Set of all syntactically valid C programs

S3. Set of all languages over the alphabet {0,1}

S4. Set of all non-regular languages over the alphabet {0,1}

Which of the above sets are uncountable?

  1. A.

    S1 and S2

  2. B.

    S3 and S4

  3. C.

    S2 and S3

  4. D.

    S1 and S4

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