in the reading room of a library, there are 23 reading spots. each reading spot consists of around table with 9 chairs placed around it. there are some readers such that in each occupiedreading spot there are different numbers of readers. if in all there are 36 readers, how manyreading spots do not have even a single reader?
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Their are 23 readingspots and each reading spots consist of 1 table and nine chairs each. Their are 36 readers in different spots, so 9*4=36. By this we get the reading spots where a single people is reading=23-4=19spots
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