gmat210minutes

Any other explanation for this question, without squring the abs value? thanks G

In Situation 1, x - z is negative and so |x - z| = z - x: In Situation 2, x - z is positive and so |x - z| = x - z Can someone explain me in detail, how to approach absolute value above. In the above example I can understand after seeing and plug-in some numbers that |x-z| = z-x. Please help me to find a way to get these concepts clearly and quickly. Thanks G

Thanks a lot - I missed that part. Hopefully I am more careful in the real test and get my objective score of 650+. G

Question - How stmt 1 is sufficient? From 'a' it says if x is in X, then 1/x is also in S. But it does not say if 1/x is in S, then X is also in S. so 3 may be in S or 1/x is there by itself in S. Please clarify

Hi tamGmat, Is the math tougher than GMATPrep. If so, what areas are tougher. Can you throw some light on it. I re-appearing for the exam next tueday and I am getting somewhere 46 - 48 in Math with around 10-12 mistakes. I am trying to get the number of mistakes to below 5. Your comment will help to prepare for the more tougher math questions. Thanks G

I have a question about A eventhough that answer sounds better. The non underlined part of the sentence uses their descendetns ... had migrated. Here why it is using a past perfect? Release is the first action and decendents migrated is the second action. Please someone help - 800Bob if can answer that would be great. Thanks G

the postive integers x, y and z are such that x is a factor of y and y is a factor of z. is Z even? 1) xz is even. 2) y is even Please expalin your answer in detail Thanks

can someone explain this anwer in detail - not clear at all. please help. Thanks G can someone explain this anwer in detail - not clear at all. please help. Thanks G [ quote=nuthan]In the xy-plane, line l and line k intersect at the point (16/5, 12/5). What is the slope of line l? (1) The product of the slopes of line l and line k is -1. (2) Line k passes through the origin. no oa opted D

someone please explain the step-3 below. Thanks G

Can someone explain what is the best way to solve this problem? Thanks G

sqrt[2sqrt63 + 2/(8+3sqrt7)] = ? a) 8 + 3sqrt7 b) 4+ 3sqrt7 c) 8 d) 4 e) sqrt7 Please show your workings. I am totally lost in this problem. thanks G

From a group of 3 boys and 3 girls, 4 children are to be randomly selected. What is the probability that equal numbers of boys and girls will be selected? A) 1/10 B) 4/9 C)1/2 D) 3/5 E) 2/3 Thanks G My answer is A. Why it is incorrect? My working as follows: 3C2/6C2 = 1/5 - selecting 2 boys 3C2/4C2 = 1/2 selecting 2 girls from the rest 4. So overall prob = 1/5*1/2 = 1/10. Thanks

99,999^2 - 1^2 = 10^10 - 2 (10^5 – 2)^2 10^4(10^5 – 2) 10^5(10^4 – 2) 10^5(10^5 – 2) Please explain your answer. I solved the problem. would like to see any short cut. Thanks G

Hi All, I understand up to 60 degrees. After that I cannot understand, how to get 4. Can someone please put a picture and help on this question. Thanks G

Congrats on achieving your score. You compared the real Gmat Quant Questions with GmatSets. Can you eloborate little bit more on that? Thanks G

Congrats. That is great inprovement. What is the spread on questions in verbal? that is SC, CR and RC. What did you do to improve from V28 to V38. I had given my test before and scored 520. Q42 and V21. Always use to score around 30 in Verbal. But in the test that did not happen. Thanks G

Hi Does anyone have the answerset for the GWCCombined questions in GmatSets. Please help. I have my exam in the next two weeks. Thanks G

Thanks

A hiker walking at constant rate of 4 miles per hour is passed by a cyclist travelling in the same direction along the same path at a constant rate of 20 miles per hour. The cyclist stops to wait for the hiker 5 minutes after passing her, while the hiker continues to walk at constant rate. How many minutes the cyclist must wait until the hiker catches up? a) 6^2/3 b) 15 c) 20 d) 25 e) 26^2/3 I got an anwer of 'D', which is wrong. I did as follows: cyclist speed 20 miles in 60 minutes so for 5 minutes it is (20*5)/60 = 5/3 miles. Hiker speed 4 miles in 60 minutes so 5/3 miles (the miles to travel to catch the cyclist) = [(5/3) * 60]/4 = 25. Please explain your answer. Please explain what is wrong in my answer. Thanks

A hiker walking at constant rate of 4 miles per hour is passed by a cyclist travelling in the same direction along the same path at a constant rate of 20 miles per hour. The cyclist stops to wait for the hiker 5 minutes after passing her, while the hiker continues to walk at constant rate. How many minutes the cyclist must wait until the hiker catches up? a) 6^2/3 b) 15 c) 20 d) 25 e) 26^2/3 I got an anwer of 'D', which is wrong. I did as follows: cyclist speed 20 miles in 60 minutes so for 5 minutes it is (20*5)/60 = 5/3 miles. Hiker speed 4 miles in 60 minutes so 5/3 miles (the miles to travel to catch the cyclist) = [(5/3) * 60]/4 = 25. Please explain your answer. Please explain what is wrong in my answer. Thanks

To install cable television in a home, a certain company charges a basic fee of $30 plus a fee of $20 for each cable outlet installed in a home. How much did the cable company charge the horace family for installing cable television in their home? 1) The cable company installed three cable outlets in the horace familiy home. 2) The amount that the cable company charged the horace family for installing cable television in their home as equivalent to an average charge of $30 per cable outlet installed. Please explain your answer. During the test my answer was A. Thanks

The numbers 'x' and 'y' are not integers. The value of 'x' is closest to which integer? 1) 4 is the integer that is closest to x+y 2) 1 is the integer that is closest to x-y. Please explain your answer in detail Thanks

Hi Kamal, Still I am not clear. Please see my question where I used my approach and got the same answer like yours. I did not complete the last step. The reason - what we are getting his only outside students. We do not that in rest of 75% students how many or what percentage are males. So, How can we come with an answer C. OA is C - I am trying to understand what I am missing. Please help

Hi all GmatPrep questions do not have explanations after completing the test. Is there any place where we can get the explanations. At this point, I have many questions incorrect or like to understand better and found it takes lot's of time to post in TM. I love to post everything, but I am appearing for GMAT in the 1st week of march. Thanks G

what is the remainder when postive integer x is divided by 6? 1) when x is divided by 2, the remainder is 1, and x is divided by 3, the remainder is 0. 2) when x is divided by 12, the remainder is 3. I can pick numbers and answer this question. However is there any remainder rule that can help to solve this problem without picking numbers. Thanks