How many two-element subsets of {1, 2, 3, 4} are there that do not co – McqOptions

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1.	How many two-element subsets of {1, 2, 3, 4} are there that do not contain the pair of elements with 2 and 4?
A.	One
B.	Two
C.	Four
D.	Five
E.	Six
Answer» D. Five

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