下面是出國留學(xué)網(wǎng)GMAT頻道整理的2015年6月GMAT數(shù)學(xué)機(jī)經(jīng)(五)，歡迎閱讀。
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21 F(n) is defined as the product of all even numbers from 2 to n, inclusive. What is the
least prime factor of f(100) + 1.
A. From 2 to 10
B. From 10 to 20
C. From 20 to 30
D. From 30 to 40
E. Greater than 40
22 If point (a, b) is on line k, is the distance from the point to origin greater than 5?
(1) a – b > 5
(2) a^2 + b^2 > 5
23 Is m/n > n/m?
(1) m > n
(2) mn > 0
24 How many intersection does y = x^4 – x^2 have with x-‐axis?
A. 0
B. 1
C. 2
D. 3
E. 4
25 Is x > 0?
(1) x^2 – x^3 = 0
(2) |x| = x