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The average age of eleven players of a cricket team decreases by 2 months when two new players are included in the team replacing two players of age 17 years and 20 years.The average age of new player is :
(a)
17 years 1 month
(b)
17 years 7 month
(c)
17 years 11 month
(d)
18 years 3 month

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is the average marks obtained by students. The average marks of successful candidates was , and that of unsuccessful candidates was . What is the number of successful candidates in that examination?

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