Forum: GMAT Math

If x is an integer and y=3x+2,which of the following cannot be a divisor of y? a)4 b)5 c)6 d)7 e)8 kindly explain

If n is a multiple of 5 and n=(p*p)*q , where p and q are prime numbers, which of the following must be a multiple of 25 A) p*p B) q*q C) (p*p)*(q*q) D) (p*p*p)*q

there are four consecutive prime numbers in ascending order. the product of the first three is 4199 and of the last three is 7429. what would be the largest number and what would be the smallest number of the four numbers?

/ = ? XY =1 answer is 16, maybe I am missing something but I could not solve this to save my life....

Can someone please post a link that has online tests on it. I have seen the link but dun recall it. tamGmat

(3) What is tenth digit of r? (i) Tens digit of r/10 is 3 (ii) Hundred digit of 10 r is 6 (4) if some company division A,X has 4850 customers , if 86 service error in A, what was service error rate , in no of service error per100 customer , for division B of same company X in 1995? (I)...

A set has 16 numbers. If a number is three times the average of the other 15 numbers, the number is what fraction of the sum of the total numbers? any short way?

if x is a +ve prime figure, x is not a prime number ! x=? 1. sum of 3 primes 2. diff b/w 1 odd and 1 even 3. diff b/w 1 odd and 1 odd 4. product of 2 even 5. product of 2 primes

1) From left to right, there are 4 points w, x, y, z on the number line, is xy >0? (1) wz < 0 (2) wy > 0 2)What is the units digit of the number 33^43 + 43^33? 33^43 = 3 (4k+3) 43 ^33 = ??? (please help)

I've been "guesting" on Test Magic for the last few months. Thanks for all the incredibly helpful members' posts. I'm now down to G Day and it isn't pretty. I've read about probability notes on the forum and spent the last two hours searching for them. Do you know where they are? Can anyone more...

Hi Can you please help me with OG DS and PS listed below or something else (link or files or..)? Thank you! 2005-07-01_022249_datasuff.pdf 2005-07-02_050553_datasuffexpl.part1.rar 2005-07-02_050828_datasuffexpl.part2.rar

I wanna download the soft copy of OG math, any directions ?

Is N an integer 1. n^2 is an integer 2. sq root n is an integer. Can somebody explain why A is not sufficient

Hi guys, Could someone please help me with the following. If 10^k = 1/2 then 10^k+3= I will appreciate if you could show your calculations in detail

How many ways a 9 member xyz group can be formed from 6 boys and 6 girls where number of boys will always be 1 more than number of girls in the xyz group? Need explanation.

hello people. can somebody explain the reverse FOIL process. it's the process of factoring equations. e.g. factoring x<2>-7x+6 thank you

Hi guys! I need some help for the following problems . I have difficulties understanding coordinate geometry . So please explain in detail :) .If you don`t have time do solve them ,please give me some links with coordinate geometry . I pretty much have a phobia with the gmat math…. Thanks...

How many 3-digit numbers are possible using the digits 0, 1, 4, 5, 7 and 9? Ans is 180. Can someone please explain how?

Friends, Are these two terms the same? What is the difference and most importantly how to find them? Please calrify this. I am stuck whenever I get questions on these two terms.:( Thank you.

37. How many degrees are in the sum of the measures of the interior angles of a regular polygon with 10 sides? (A) 1200 (B) 1600 (C) 2440 (D) 1800 (E) 1440 31. An inheritance of $120,000 is divided among 3 people in a ratio of 3:4:5. How much was the largest share? (A) $30,000 (B) $40,000