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Mr. Dubey • 100.69K Points
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Q. In some programming languages, an identifier is permitted to be a letter followed by any number of letters or digits. If L and D denotes the set of letters and digit respectively. Which of the following expression defines an identifier?

  • (A) (L + D) *
  • (B) (L.D) *
  • (C) L(L + D) *
  • (D) L(L.D) *
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