1.

Which among the following is not a proper subset of\[\left\{ a,\text{ }b,\text{ }c \right\}\]?

A.  \[\left\{ a,\text{ }b \right\}\]
B. \[\left\{ a,\text{ }b,\text{ }c \right\}\]  
C.  {b, c}   
D.  \[\left\{ a \right\}\]
E.  None of these
Answer» C.  {b, c}   


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