How many different combinations of pennies,nickels,dimes,quarters,and dollars can a piggy bank contain if it has 20 coins in it?
2022-04-25 17:51:14 28次 反馈错误 加入收藏 正确率 : 100%
题目内容：
How many different combinations of pennies,nickels,dimes,quarters,
and dollars can a piggy bank contain if it has 20 coins in it?
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