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问答题
A jar contains 30 coins, of which 20 are nickels and 10 are dimes. If 7 coins are removed, how many nickels are left? (1) More nickels are removed than dimes. (2) The remaining coins in the jar are worth $1.55.
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解析：
条件1没有涉及具体数字，无法计算剩余的分币数量；条件2可以计算，故本题选B项。
条件1没有涉及具体数字，无法计算剩余的分币数量；条件2可以计算，故本题选B项。
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