AMC考试练习题及答案解析(2)
Problem
For the game show Who Wants To Be A Millionaire?, the dollar values of each question are shown in the following table (where K = 1000).
![]()
Between which two questions is the percent increase of the value the smallest?
![]()
Solution
Notice that in two of the increases, the dollar amount doubles. The increases in which this is not true is
to
,
to
, and
to
. We can disregard
to
since that increase is almost
times. The increase from
to
is
, so it's only multiplied by a factor of
. The increase from
to
is
, so it's only multiplied by a factor of
. Therefore, the smallest percent increase is ![]()
问题
对于想要成为百万富翁的游戏节目?,每个问题的美元价值如下表所示(其中K = 1000)。
![]()
两个问题之间的最小值增加百分比是多少?
![]()
解
请注意,在两次增加中,美元金额翻倍。该增加在这不是真的是
给
,
给
,并
给
。我们可以无视
,
因为这种增长几乎是
几次。从增长
到
是
,因此它只能通过一个因子相乘
。从增长
到
是
,因此它只能通过一个因子相乘
。因此,增幅最小的是![]()
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