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Instructions
Each Question consist of a problem followed by two statements marked as I and II .Decide whether data in the statements are sufficient to answer the questions . Mark answer as
Question 121
If no student took test T more than once, how many students took test T?
I. The average(arithmetic mean) of the students’ scores on test T was 72.
II. The sum of the students’ scores on test T was 2,232.
Solution
Average = Sum of the scores/ Number of students
=> Number of students = Sum of the scores/Average
Hence both statements are necessary
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