Question
Mr Ken had 66 golf balls. He gave 16 of his golf balls to Valen. During the practice, Mr Ken lost 4 golf balls. How many golf balls did Mr Ken have in the end?
4 m

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Mr Ken had 66 golf balls. He gave 16 of his golf balls to Valen. During the practice, Mr Ken lost 4 golf balls. How many golf balls did Mr Ken have in the end?