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In a box of 500 balls, there are 100 blue balls, 150 red balls, 200 yellow and 50 green balls. A sample of 60

In a box of 500 balls, there are 100 blue balls, 150 red balls, 200 yellow and 50 green balls. A sample of 60 balls is to be collected. Using stratified sampling find the number of each balls in the sample?

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