Answer:
1. 16
2. {a} {b} {c} {d} {ab} {ac} {ad} {bc} {bd} {cd} {abc} {abd} {cbd} {adc} {abcd}
3. {bcd}
Step-by-step explanation:
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Answers & Comments
Answer:
1. 16
2. {a} {b} {c} {d} {ab} {ac} {ad} {bc} {bd} {cd} {abc} {abd} {cbd} {adc} {abcd}
3. {bcd}
Step-by-step explanation: