Each number in a sequence comes from {10,20,30}. What's the average of this sequence?
(1) 60% of the numbers in this sequence is no more than 20
(2) 80% of the numbers in the sequence is no less than 20
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AStatement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
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BStatement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
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CBoth statements TOGETHER are sufficient, but NEITHER one ALONE is sufficient.
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DEACH statement ALONE is sufficient.
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EStatements (1) and (2) TOGETHER are NOT sufficient.
显示答案
正确答案: C