真题汇总:2007年11月20日gre数学真题部分.

　　Tuesday, November 20, 2007

　　1)Twice the sum of 3 integers x ,y and z when divided by 7 gives remainder 1

　　what is the remainder when x+y+z is divided by 7?

　　Ans: 4

　　2) (1/2 + 1/3)+ (1/4 -1/3) + (1/2-1/4) = 1

　　3) 4 points A,B,C,D on a straight line such that AD:AB = 9:1 and AD:AC = 4:1

　　points A,B,C,D are:-

　　A. -20, -8, -10, 16

　　B. -20, -16, 11, 16

　　C. -20, -16, -11, 16

　　D. -20, -16, -11, 7

　　E. -20, -10, -11, 7

　　Ans: C

　　4) If probability of event M occuring is <1/4

　　Col a: prob of event M not occuring

　　Col b: 3/4

　　5) A semicircle was given with area 2pie find the perimeter of the semicircle

　　Ans: 2pie+4

　　6) x when divided by 7 leaves remainder 4.What is the remainder when 2x + 5 is divided by 7?

　　Ans: 6

　　7) The probability of raining tomorrow night is 0.46

　　Col a Col b

　　Probability of raining tomorrow night

　　and at high heat temp of 85degress is 0.54

　　Ans: B

　　Cool |x|<= 6, |y|<=4.

　　Col a Col b

　　The maximum value of |y/x| 1

　　Ans: D

　　9) The volume and height of a cylinder is given as 54pi and 6. Find the circumference of the base of

　　cylinder?

　　Ans: 6*pie

　　10) Given circle is x^2 + y^2 = 49 points on circle are A(3,a) and B(0,b) and given &aposa&apos is positive and &aposb&apos

　　is negative.

　　Col A : length of segment AB

　　Col B : 12

　　Ans: A

　　11) Given a figure of triangle with sides t, t, n. If the average of two angles of the triangle is 65 then

　　what is the value of n?

　　Ans: 80

　　12) 0<1

　　Col a Col b

　　x y^2

　　Ans: D

　　13) xy+x(y+2) when divided by 2 leaves a remainder

　　Cola Colb

　　Remainder 0

　　Ans: D