In computing a mean of 8 numbers, a boy mistakenly used 17 instead of 25 as one of the numbers and obtained 20 as mean. Find the correct mean.
a. 19
b. 21
c. 23
d. 24

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kishorStatistics
In computing a mean of 8 numbers, a boy mistakenly used 17 instead of 25 as one of the numbers and obtained 20 as mean. Find the correct mean.a. 19b. 21c. 23d. 24