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题库 / GMATAdvanced-DS-81
Each entry in the multiplication table above is an integer that is either positive, negative,or zero. What is the value of a?
(1)h≠0
(2)c=f
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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注意c=0的情况，此时a的值不确定；因此只有两个条件结合才可
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