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题库 / GMATAdvanced-DS-23
Three dice, each with faces numbered 1 through 6, were tossed onto a game board. If one of the dice turned up 4, what was the sum of the numbers that turned up on all three dice?
(1)The sum of two of the numbers that turned up was 10.
(2)The sum of two of the numbers that turned up was 11.
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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不要把条件1代入到题目中，
通过条件2，可以得出剩下两个骰子的和一定为11，而满足条件的点数只有5+6，所以无需条件1也可以求！！
注意题目只需要三个骰子的总和，假设三个数为 x y 4
如果4和其中一个数的总和是11，则＝4+7（骰子最多只有6），所以必为x+y=11，所以总和为15
唉又粗心了
2)X+Y=11 4放入的話另一數為7,不可能 所以只能4+X+Y=4+11=15 得C
有機車道
不懂
4+1到6的任何一个数都不能等于11，所以（2）一定是后两个未知数的sum，故总和=11+4=15
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