真题汇总:2007年11月27日美国GRE数学真题部分(2)

　　Col A: Number of Birthdays in July

　　Col B: 3

　　Ans: A

　　17. {(0.401)*(0.211)*(0.197)} / {(0.some number)*(0.155)*(0.343)} = this type of question was given .

　　18. In a triangle the three angles are given as X,X,Y. and the avg of two angles is 65, then what is the possible value of Y in the below options?

　　A. 60

　　B. 65

　　C. 70

　　D. 75

　　E. 80

　　Ans: E

　　19. x is an integer such that x > 3

　　Col a: number of even factors of 2x

　　Col b: number of odd factors of 3x

　　Ans: D

　　20. A set contains following no.'s a1,a2,a3.........a100

　　An= ((n+1)/n)+1) for n odd integer

　　An= -An-1 for n even integer

　　Find it's range...

　　21. lj+2l<3 and (k-1)^2=16

　　coll a:jk

　　col b:15

　　Ans: B

　　22. A price of product x is increased by p% to give new price y and then price of y is reduced by r% to give original price.

　　Col A: p

　　Col B: r

　　Ans: A

　　23. Three cuboids R, S and T were given…

　　Sides of R x, y, z

　　Sides of S x+10, y, z

　　Sides of T x, y, z+10

　　Col A: volume of s minus volume of R

　　Col B: volume of T minus volume of R

　　Ans: D

　　24. John's salary for a particular month is given by the equation: 1520 + 0.15x where x is the amount obtained from the sales made by John. In July 2000, John got $300 more than June 2000. By how much did John's sales increase in July 2000 as compared to June 2000?

　　Ans : $2000

　　25. A company has 54 employees. There are more birthdays on Wednesdays then on any other day of the week.

　　Col A: minimum no. of birthdays on Wednesdays

　　Col B: 8

　　Ans: A