Ononot — Consider the sequence of sets defined by S0 = \emptyset, and

Set Theorymedium

0:00.0

Consider the sequence of sets defined by $S_0 = \emptyset$ , and $S_{n+1} = S_n \cup \{S_n\}$ for all $n \geq 0$ . Which of the following statements is true regarding $S_3$ ?