a library has an average of 510 visitors on sundays and 240 on other days. the

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a library has an average of 510 visitors on sundays and 240 on other days. the average number of visitors per day in a month of 30 days beginning with a sunday is :

Options:

A . 285

B . 290

C . 297

D . 305

Answer: Option A
Explanation :

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Question 1. the mean of 50 observations was 36. it was found later that an observation 48 was wrongly taken as 23. the corrected n....wrongly taken as 23. the corrected new mean is :

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Question 8. a library has an average of 510 visitors on sundays and 240 on other days. the average number of visitors per day in a....month of 30 days beginning with a sunday is :

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