cuteseyus

I am currently using some of the EZ math books. I purchased the basic workbook, logic & stats and the advanced wokbook for math and I would highly recommend all of them. The books are made to focus on teaching you the basics instead of strategies. It sounds like you need to get back to basics and these books are just the thing for math.

Whats the OA? I get A as the answer: M can be 3, 5, 7, 9,....29 1. M is not divisible by 3: Therefore, M can be 5, 7, 11, 13, 17....., 29 All these numbers are prime and hence are divisible by 2 numbers, 1 and themselves. 2. M is not divisible by 5 Therefore, M can be 3, 7, 9, 11, 13, 17,.....29 INSUFF here as you have 3 and 9... that are divisible by 2 diff prime's but then 12, 15, etc. are divisible by more than 2 diff prime numbers Therefore, the answer must be A (I hope!)

Where can I find the verbal sets? I tried searching for it and found nothing. Thank you.

Genius_in_the_gene I used your approach and got this: T10 = 1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/250+1/512+1/1024 =512+256+128+64+32+16+8+4+2+1/1024 = 1023/1024 =about 0.99 or almost 1 So I get 1/2

Sorry about that this should be 16 + 16*2^1/2 Let me see if I can revise my original post.

Hi arindambanerji, the answer should be A = 74. I think your equations are right but the solution is wrong. 58 = m - 2sd------(1) 98 = m + 3sd-------(2) Solving both together we get 5sd = 40 sd = 8 Replacing into (1) we get: 58 = m - 2(8) m = 74

Anyone? I'm taking the GMAT this coming Monday and I'd appreciate any help!

If a, b, k, and m are positive integers, is (a)^k a factor of (b)^m? 1. a is a factor of b 2. k is less than or equal to m

#1. For which of the following is f(a+b) = f(a) + f(b) for all positive numbers a and b? A. f(x) = x^2 B. f(x) = x + 1 C. f(x) = x^1/2 D. f(x) = 2/x E. f(x) = -3x #2. For a certain examination a score of 58 was 2 standard deviations below the mean and a score of 98 was 3 standard deviations above the mean. What was the mean score for the exam? A. 74 B. 76 C. 78 D. 80 E. 82 #3. The perimeter of a certain isosceles right triangle is 16 + 16*2^1/2. What is the length of the hypotenuse of the triangle? A. 8 B. 16 C. 4* 2^1/2 D 8*2^1/2 E. 16*2^1/2 # 4. For every integer k from 1-10 inclusive the kth term of a certain sequence is given by (-1)^(k+1)*(1/2^k). If T is the sum of the first 10 terms in the sequence, then T is? A. T >2 B. 1 C. 1/2 D. 1/4 E. T # 5. Which of the following inequalities has a solution set that when graphed on the number line is a single line segment of finite length. A. x^4 >=1 B. x^3 C. x^2>=16 D. 2 E. 2 Thanks everyone!

Thanks guys. A it is! Josh your explanation really helped me!

If a certain sample of data has a mean of 20 and a standard deviation of 3, which of the following values is more than 2.5 standard deviations from the mean? A. 12.0 B. 13.5 C. 17.0 D. 23.5 E. 26.5 Please include detail on how to solve this problem! I will post the OA soon. Thanks!

I would suggest for you to practice, practice, practice! I found this blog on 1000 SC's with answers so perhaps it will be useful to you: GMAT 1000 Scs Questions with Explaination.. I have an issue with RC as well. There are times when I do really well (when I understand the passage, that is) and other times I bomb. Generally, I also like readfing the passage properly to know exactly what it is talking about and that takes up too much time. I think a lot of practise is what is needed and you do have some time.. Good luck!

Thank you gmatrookie. I am taking GMAT Prep and will be searching for other CAT's online to try and improve my score. I took the GMATprepII and my second score was 60 (slightly higher in verbal). My main issue is I feel I can get much higher than 41 on math and when I go through the questions I got wrong a lot of it is due to silly mistakes!! I guess I need to stop rushing and read the question properly. Good luck on your exam!