7. There are 50 numbers. Each number is subtracted from 53 and the mean of the
numbers so obtained is found to be - 3.5. Find the mean of the given numbers.
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Step-by-step explanation:
Total numbers =50
Mean of numbers after subtracting 53 from each =3.5
Sum of numbers after subtracting 53 from each =3.5×50=175
Sum of the original numbers =175+53×50=2825
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