Question
There are 63 gold balls and 30 silver balls in a basket. 29 of the gold balls are defective. All the silver balls are not defective. How many more gold balls than silver balls are not defective?
4 m

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There are 63 gold balls and 30 silver balls in a basket. 29 of the gold balls are defective. All the silver balls are not defective. How many more gold balls than silver balls are not defective?