Ava I.

asked • 12/16/18

I struggle on venn dirgarams. Answer this?

A  teacher  surveys  her  class  of  25  students.  She  finds  that  13  students  have  a  sister,   15  students  have  a  brother,   and  8  students  have  both  a  sister  and  a  brother.  How  many  students  have  no  siblings?

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