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GWD-24-Q9:
The operation* represents either addition, subtraction, or multiplication of integers,
what is the value of 1*0?
(1)0*2=2
(2)2*0=2
答案是A，可我選D，不懂為何第二個條件不能單獨成立?
GWD-24-Q12:
During a 10-week summer vacation, was the average (arithmetic mean) number of books that
Carolyn read per week greater than the average number of books that Jacob read
per week?
(1)Twice the average number of books that Carolyn read per week was greater
than 5 less than twice the average number of books that Jacob read per week.
(2) During the last 5 weeks of the vacation, Carolyn read a total of 3 books more than
Jacob.
這題答案是A,為甚麼呢? |
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发表于 2012-9-27 19:33:22
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