真题汇总:2007年11月26日gre数学真题部分.

　　Monday, November 26, 2007

　　1. In xy coordinate a square is drawn by connecting y, x, -y and -x coordinate. The area of the square is 36.

　　Col A:Distance between the center of the coordinate and the point in –y coordinate

　　Col B: 2.4

　　2. x is multiple of 3 and 3x has unit digit 7.

　　Col A: x

　　Col B: 69

　　Ans: D

　　3. In a company there are 54 members. If wednesday has more numbers of birthdays then what is the least number of birthdays on wednesday?

　　A. 6

　　B. 7

　　C. 8

　　D. 9

　　E. 10

　　Ans: D

　　4. x and y are positive integers.

　　Col A: remainder when xy+x(y+2) is devided by 2.

　　Col B: 0

　　Ans: C

　　5. |J+2|<3 and (k-1)^2=16

　　Col A: jk

　　Col B: 15

　　Ans: B

　　6. If x-x/2-x/4-x/8 = 16 find x?

　　Ans: 128

　　7. 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

　　8. A label of vertical width w is stick on a cylinderical vessel with area A(some number) and height 10cm.

　　Cola: w

　　Colb: 4.5

　　Ans: D

　　9. A circle was given with radius 6, it contained a shaded area. The degree measure of the unshaded area was 260. Find the area of

　　shaded region.

　　Ans:10pie

　　10. There is a circular water fountain of Diameter 12m. The wall of the tank has a width of 2m. If the thickness of the fountain is 0.06m, what is the volume of the concrete used in constructing the tank?

　　Ans: 1.68pi cu.m

　　11. 3^(4n+1) divided by 10

　　Col A: Remainder

　　Col B: 0

　　12. x1, x2, x3, x4 & x5 are the events Rate of occurance of them are r1, r2, r3, r4 & r5

　　E = x1r1+x2r2+x3r3+x4r4+x5r5/(x1+x2+x3+x4+x5)

　　x1=r1=1

　　x2=r2=2

　　x3=r3=3

　　x4=r4=4

　　x5=r5=5. Find E?

　　Ans: 11/3

　　13. Given ax^2+bx+c=0, (2x+3)(2x-3)=0

　　Col a:a+b+c

　　Col b: -5

　　Ans: C

　　14. Given average(arithmetic mean) of t,u,v is x.

　　Col a:arithmetic mean of t,u,v and x

　　Col b:x

　　Ans: C

　　15. Col a: (-2)^-5

　　Col b: 1

　　Ans: B