Question
There are 63 gold balls and 22 grey balls in a basket. 37 of the gold balls are defective. All the grey balls are not defective. How many more gold balls than grey balls are not defective?
4 m

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There are 63 gold balls and 22 grey balls in a basket. 37 of the gold balls are defective. All the grey balls are not defective. How many more gold balls than grey balls are not defective?