【官方指南】新GRE数学真题OG例题讲解之三角形的内角和问题

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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

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