【题文】定义A-B = {x| x A,且x B},若A =" {2," 4, 6, 8, 10},B =" {1," 4, 8},则A-B
【题文】定义A-B = {x| x A,且x B},若A =" {2," 4, 6, 8, 10},B =" {1," 4, 8},则A-B
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【题文】定义
A-
B = {
x|
x A,且
x B},若
A =" {2," 4, 6, 8, 10},
B =" {1," 4, 8},则
A-
B等于
(2)
A.{4, 8} | B.{1, 2, 6, 10} | C.{1} | D.{2, 6, 10} |
答案
【答案】D
解析
【解析】略
举一反三
【题文】定义
A-
B = {
x|
x A,且
x B},若
A =" {2," 4, 6, 8, 10},
B =" {1," 4, 8},则
A-
B等于
(2)
A.{4, 8} | B.{1, 2, 6, 10} | C.{1} | D.{2, 6, 10} |
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