How many strings do the following languages over {0,1} have? if the answer is finite, give the number if it is infinite, state whether it is countable or uncountable. If the question is not a language over {0,1}, state this.

(a) L = {}

(b) L = {}

(c) L = {x || x = }

(d) {x || x is the set of strings over {0,1} of length 3}

(e) L = {x || number of as in x = number of bs in x}

(f) L is the set of all strings over {0,1}