koi solve karoge kya isko plzz
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Answer:
the mean score is 72
Step-by-step explanation:
explanation is in the photo
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Answered by
1
Step-by-step explanation:
Mean score of girls = 73
Mean score of boys = 71
Mean score of all class
=> Mean score of girls + Mean score of boys / 2
=> 73+71 / 2
=> 144/2 = 72
So,Mean Marks of class = 72.
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