# 1ถูก/ผิดให้ • U = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} • A = {1, 3, 5, 7} • B = {2, 3, 4, 5} • C = {4, 5, 6, 7} 1. A U B = {1, 2, 3, 4, 5, 7}ใช่หรือไม่
# 2ถูก/ผิดให้ • U = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} • A = {1, 3, 5, 7} • B = {2, 3, 4, 5} • C = {4, 5, 6, 7} 2. A U C = \{5, 7\} (มี 2 ตัว ไม่ใช่ตัวเดียว)ใช่หรือไม่
# 3ถูก/ผิดให้ • U = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} • A = {1, 3, 5, 7} • B = {2, 3, 4, 5} • C = {4, 5, 6, 7} 3. B - C = \{2, 3\} ใช่หรือไม่
# 4ถูก/ผิดให้ • U = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} • A = {1, 3, 5, 7} • B = {2, 3, 4, 5} • C = {4, 5, 6, 7} 4. A’ = \{0, 2, 4, 6, 8, 9\} ใช่หรือไม่
# 5ถูก/ผิดให้ • U = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} • A = {1, 3, 5, 7} • B = {2, 3, 4, 5} • C = {4, 5, 6, 7} 5. B U C = \{4, 5\} ใช่หรือไม่
# 6ถูก/ผิดให้ • U = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} • A = {1, 3, 5, 7} • B = {2, 3, 4, 5} • C = {4, 5, 6, 7} 6. (A U B)’ = \{0, 6, 8, 9\} ใช่หรือไม่
# 7ถูก/ผิดให้ • U = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} • A = {1, 3, 5, 7} • B = {2, 3, 4, 5} • C = {4, 5, 6, 7} 7. A U B = \{3, 5\} ใช่หรือไม่
# 8ถูก/ผิดให้ • U = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} • A = {1, 3, 5, 7} • B = {2, 3, 4, 5} • C = {4, 5, 6, 7} 8.(A U B) \cap C = \{4, 5, 7\} ใช่หรือไม่
# 9ถูก/ผิดให้ • U = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} • A = {1, 3, 5, 7} • B = {2, 3, 4, 5} • C = {4, 5, 6, 7} 9. A’ U B’ = U ใช่หรือไม่
# 10ถูก/ผิดให้ • U = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} • A = {1, 3, 5, 7} • B = {2, 3, 4, 5} • C = {4, 5, 6, 7} 10. A U B \cap C = \{5\} ใช่หรือไม่