1.Which of the following is correct? (1) (7) E {1, 2, 3, 4, 5, 6, 7, 8, 9, 10) (2) 7 E {1, 2, 3, 4, 5, 6, 7, 8, 9, 10) 3) 7 {1, 2, 3, 4, 5, 6, 7, 8, 9, 10). (4) {7) (1, 2, 3, 4, 5, 6, 7, 8, 9, 10} About the author Luna
Answer:
1. A
2. B
3. C
4. A
this is a problem