Question
There are 56 red balls and 24 blue balls in a basket. 37 of the red balls are defective. All the blue balls are not defective. How many more red balls than blue balls are not defective?
4 m

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There are 56 red balls and 24 blue balls in a basket. 37 of the red balls are defective. All the blue balls are not defective. How many more red balls than blue balls are not defective?