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题库 / OG2017Q-DS-177
What is the tenths digit of the number d when it is written as a decimal?
(1) d=~$54 \over 25$~
(2) 1,000d = 2,160
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.
题目分析：
1.d=~$\frac{54}{25}=2.16$~ ,其十分位数为小数点右边第一位，是1，满足要求。
2. 1000d=2160，d=2.16，同条件1，十分位数为1，满足要求
综上所述，答案为（D），任何一个条件均能说明问题
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