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Mathematics 10 Online
OpenStudy (anonymous):

ALGER-BRA 1( check my answer) What are all the subsets of the set? {–1,9} a. , {–1}, {9} c. , {–1}, {9}, {–1,9} b. {–1}, {9}, {–1, 9} (my answer) d. {–1}, {0}

OpenStudy (anonymous):

none of the above my friend

OpenStudy (anonymous):

oh ok thanks..

OpenStudy (anonymous):

Wait would it be 0, {–1}, {9}, {–1, 9} ?

OpenStudy (anonymous):

actually phi is also a subset

OpenStudy (anonymous):

phi and {-1,9} are called proper subset

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