Question
PSLE
The table shows the number of books read by each pupil in a class of 18 pupils. One of the numbers in the table is covered by an ink blot. The average number of books read by the pupils in the class is 5. What is the number covered by the ink blot?

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PSLE
The table shows the number of books read by each pupil in a class of 18 pupils. One of the numbers in the table is covered by an ink blot. The average number of books read by the pupils in the class is 5. What is the number covered by the ink blot?