The arithmetic mean of 8 no. is 72. if 3 is subtracted from each no. then the arithmetic mean of the new mean will be?
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Sum of 8 numbers = 72×8 = 576
when 3 is subtracted from each number , then Sum of these 8 numbers
= 576 - 24 = 552
Now , the New mean = 552/8 = 69
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