Aug2016 cs Q31

0. The number of strings of length 4 that are generated by the regular expression (0+1+|2+3+)*, where | is an alternation character and {+, *} are quantification characters, is:

Answer
Comment
Array

Option : C
Explanation :
Possible strings of length 4 are: 0001, 0111, 0011, 0101, 0123, 2323, 2333, 2223, 2233, 2301. Total 10 strings are possible. So, option (C) is correct.

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