[計量] GWD24-Q21,31,35
Q21. If P and R are positive, is 25 percent of P equal to 10 percent of R ?
(1) R is 150 percent greater than P
(2) P is 60 percent less than R
Ans. D
不太懂為啥是D阿？
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Q31. Each side of a certain parallelogram has length 6. If the area of the
parallelogram is 18. Which of the following is the measure of one of
its angles?
A 30' B 45' C 60' D 90' E 120'
Ans. A
How to count the answer?
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Q35. What is the value of x^2yz+xy^2z+xyz^2
(1) x+y+z=18
(2) xyz=10
Ans. C
My answer is E but I don't understand how to count the answer?
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※ 編輯: NOWIZKI 來自: 61.230.11.184 (01/17 12:32)
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