Question
Mr Oliver had 60 ping pong balls. He gave 14 of his ping pong balls to Rael. During the practice, Mr Oliver lost 4 ping pong balls. How many ping pong balls did Mr Oliver have in the end?
4 m

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Mr Oliver had 60 ping pong balls. He gave 14 of his ping pong balls to Rael. During the practice, Mr Oliver lost 4 ping pong balls. How many ping pong balls did Mr Oliver have in the end?