Forum: GMAT Math

A buyer buys 3 different items out of the newly introduced 10 different items. If two items were to be selected at random, what is the probability that the buyer does not have both the chosen items? A. 1/8 B. 11/17 C. 13/21 D. 7/15 E. 8/15

A merchant paid $300 for a shipment of x identical calculators. The merchant used 2 of the calculators as demonstrators and sold each of the others for $5 more than the average (arithmetic mean) cost of the x calculators. If the total revenue from the sale of the calculators was $120 more than...

I am not sure how to do this question. I would really appreciate any help. Each side of a certain parallelogram has length 6. if the area of the parallelogram is 18. which of the following is the measure of one of its angles? A. 30’ B. 45’ C. 60’ D. 90’ E.120’ OA A

Could someone please help me with this question if p, s, and t are positive prime numbers, what is the value of p^3s^3t^3? (1) p^3st=728 (2) t=13 OA A

I find this question very tricky. Could someone help me to understand why k^0=-k. I thought any number raised to 0 is 1. If k=-1, which of the following is (are) true? 1. k^k=k 2. | k| =-k. 3.k^0=-k A. 1 only B. 1 and 2 only C. 1 and 3 only D. 2 and 3 only E. 1. 2. and 3.

Does the decimal equivalent of P/Q, where P and Q are positive integers, contain only a finite number of nonzero digits? (1) P>Q (2) Q=8 OA E I am not sure why the answer is E. I thought 2 and 5 are terminating decimal. Then why B is not correct. I would really appreciate any hel with this...

x y z are three digit numbers and x = y + z. Is hundred's digit of x equal to sum of hundred's digit of y and z? (1) tens digit of x = sum of ten's digits of y and z (2) units digit of x equal to sum of unit's digits of y and z

Q1 > If x(x - 5)(x + 2) = 0, is x negative? (1) x2 – 7x ≠ 0 (2) x2 –2x –15 ≠ 0 A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient. C. BOTH...

An equilateral triangle that has an area of 9 3^1/2 is inscribed in a circle. What is the area of the circle? A . 6pi B. 9pi C. 12 pi D. 9pi 3^1/2 E. 18pi 3^1/2 OA C I got B

I am also stuck on this question During a 10-week summer vacation, was the average (arithmetic mean) number of books that Carolyn read per week greater than the average number of books that Jacob read per week? (1) Twice the average number of books that Carolyn read per week was greater than...

I did an analysis of my strong/ weak point and realized that Number Properties are my weak point and need to improve upon a lot. Can someone let me know how you guys approached this topic? Is there any book/e-book/site which I can refer to ?

I have traditionally underperformed in all aspects of quantitative analysis. BS in Business Admin-but received a low C in Probability & Statistics and had great difficulty in Quantitative Analysis. The fact that no calc can be used on the exam is a HUGE issue. Will Princeton-type review...

Could someone please show me how to solve question similar to the one below. I want to understand how to conjugate the question properly. √ = A. 8 + 3√7 B. 4 + 3√7 C. 8 D. 4 E. √7 OA D

Cold anyone expalain to me why a is correct. Thanks in advance. Color X ink is created by blending red, blue, green, and yellow inks in the ratio 6:5:2:2. what is the number of liters of green ink that was used to create a certain batch of color X ink? (1) The amount of red ink used to create...

which is greater 2 ,s power 300 or 3,s power 200.

1) A certain company that sells only cars and trucks reported that revenues from car sales in 1997 were down 11 percent from 1996 and revenues from truck sales in 1997 were up 7 percent from 1996. If total revenues from car sales and truck sales in 1997 were up 1 percent from 1996, what is the...

Could someone please help me to understand this question from sets? Box W and Box V each contain several blue sticks and red sticks, and all of the red sticks have the same length. The length of each red stick is 19 inches less that the average length of the sticks in Box W and 6 inches greater...

Anyone knows how to solve the questions below? Please show working - I'm trying to understand the concepts. 1) (0.8)-5 / (0.4)-4= (A)3/32 (B)5/64 (C)1/2 (D)1 (E)2

Could someone help me with this question? What is the median number of employees assigned per project for the projects at Company Z? (1)25 percent of the projects at Company Z have 4 or more employees assigned to each project. (2)35 percent of the projects at Company Z have 2 or...

2) A certain company that sells only cars and trucks reported that revenues from car sales in 1997 were down 11 percent from 1996 and revenues from truck sales in 1997 were up 7 percent from 1996. If total revenues from car sales and truck sales in 1997 were up 1 percent from 1996, what is the...