Answers ( 2 )
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    Answer:56 students

    The students have neither a dog or a cat is: 120−52−31+19=56120−52−31+19=56 students.

       Good luck!

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                    Answer:

      75+34+43+25+66+57

    =(75+25)+(34+66)+(43+57)

    =100+100+100

    =100x3

    =300

          I mathhahahehehiha