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题库 / Prep2007E2-DS-49
Is the hundredths digit of the decimal d greater than 5 ?
(1) The tenths digit of 10d is 7.
(2) The thousandths digit of ~$\frac{d}{10}$~ is 7.
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.
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题目问十进制的数字d百分位上是否大于5
条件1，10d的十分位是7，10d的十分位就是d的百分位，7>5，所以成分
条件2，d/10的千分位是7，d/10的千分位就是d的百分位，7>5，所以充分
选D
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