| http://www.w3.org/ns/prov#value | - Similarly, since \(A_3=\{0,1,2,3,4,\cdots,998,999\}\), \(S_3\) is the union of two sets, one whose elements all start with the digit '3' (there are exactly \(10^2\) such integers), and the other one whose elements do not start with the digit '3' (there are exactly \(9\cdot T_2\) of those, since if the most significant digit is not '3' then the number formed by the other digits must belong to \(S_2
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