Question
There are 63 brown balls and 26 yellow balls in a basket. 59 of the brown balls are defective. All the yellow balls are not defective. How many more brown balls than yellow balls are not defective?
4 m

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There are 63 brown balls and 26 yellow balls in a basket. 59 of the brown balls are defective. All the yellow balls are not defective. How many more brown balls than yellow balls are not defective?