find plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz
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Answer:
class mark = (upper limit + lower limit)/2
=(120+90)/2
=210/2
=105
hope this will help you......
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