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M= 4^(1/2) + 4^ (1/3) + 4 ^ (1/4) so basicaly U have to add 1/2 + 1/3 + 1/4 = 13/12 = 1+ 1/12 this will give U: M = 4 ^ ( 1 + 1/12) = 4^1 + 4^ (1/12) = 4 + 4^ (1/12) Thus: Answer is E Hope that helps. I am not sure about what you have done over here. Could you please explain in a bit more detail. W...
- by gabriel
Thu Feb 26, 2009 9:43 am- Forum: Problem Solving
- Topic: third root and fourth root
- Replies: 6
- Views: 3697
The last questions in OG are definitely in the 600+ range. But I would still suggest you to solve them, if you have time. After all a bit of extra prep wont hurt you.
- by gabriel
Fri Feb 20, 2009 5:15 pm- Forum: GMAT Math
- Topic: A GMAT Question
- Replies: 2
- Views: 1552
Believe me the only thing you need to know about standard deviation for the GMAT is its formula and its definition.
- by gabriel
Fri Feb 20, 2009 5:14 pm- Forum: GMAT Math
- Topic: Standard Deviation Tutorials
- Replies: 2
- Views: 1745
- by gabriel
Fri Feb 20, 2009 5:10 pm- Forum: Problem Solving
- Topic: taken not more than p times
- Replies: 4
- Views: 1236
It is C = root3/2 .. The 4 possible sums are 0, 1, 2, 3 The probability of it being 0 is 1/8 The probability of it being 1 is 3/8 The probability of it being 2 is 3/8 The probability of it being 3 is 1/8 So the mean is (0*1+1*3+2*3+3*1)/8 = 1.5 The variance = (0-1.5)^*1/8 + (1-1.5)^2*3/8+(2-1.5)^2*3...
- by gabriel
Fri Feb 20, 2009 9:46 am- Forum: Problem Solving
- Topic: A 750+ treat
- Replies: 14
- Views: 2843
- by gabriel
Fri Feb 20, 2009 9:13 am- Forum: I just Beat The GMAT!
- Topic: Mission Accomplished 730 ( Q:51, V:38)
- Replies: 104
- Views: 37934
are suresh bala p***a gaya hai kya, kis lihaj se ye 780+ gmat q hai...kaha padha raha hai gmat faculty ke roop me...kya score hai? If you have a problem with the questions, dont solve them. But do not use such language on this board again. Also English is the only language you can use to communicat...
- by gabriel
Wed Feb 18, 2009 1:46 pm- Forum: Problem Solving
- Topic: Problem Solving for 780+ Aspirants.
- Replies: 209
- Views: 63596
No, reinstalling wouldnt give you completely new set of questions. If you have already taken the test twice then chances are that on your third attempt you will see many of the same questions.
Cheers
- by gabriel
Mon Feb 16, 2009 9:55 am- Forum: GMAT Strategy
- Topic: GMATPrep TEST: Can I take it more than 2 ?
- Replies: 1
- Views: 1228
Re: Extra Practice
Hi All, Can anyone suggest which one out of the below three (recommended by various 700+ guys) for extra practice one should buy. 1. GMATFocus. 2. MH Challenge Problem Set 3. ScoreChasers membership (I guess it is for both QA and Verbal) Thanks Does MH, mean Manhattan GMAT, if yes, then I would sug...
- by gabriel
Mon Feb 16, 2009 9:53 am- Forum: GMAT Strategy
- Topic: Extra Practice
- Replies: 1
- Views: 1178
- by gabriel
Thu Feb 12, 2009 7:01 pm- Forum: Problem Solving
- Topic: Problem Solving for 780+ Aspirants.
- Replies: 209
- Views: 63596
- by gabriel
Thu Feb 12, 2009 10:09 am- Forum: I just Beat The GMAT!
- Topic: Some success finally!!! 750 (Q50, V40)
- Replies: 11
- Views: 3705
- by gabriel
Thu Feb 12, 2009 10:08 am- Forum: I just Beat The GMAT!
- Topic: 720!!!! 49Q, 41V. I am very happy
- Replies: 11
- Views: 7907
One clock is 3 minute slow and other clock is 5 minutes fast. So if we take the first clock to be correct, then the second one will be 8 minute faster than the first clock. So in one hour it gains 8 minutes. Now both the clock to strike midnight 12 together, the second clock should have gained one ...
- by gabriel
Thu Feb 05, 2009 7:01 pm- Forum: Problem Solving
- Topic: Gertrude and her grandmother's clocks
- Replies: 3
- Views: 1662
One question per thread. Also please search for these questions, many of them have been answered several times before. Thread locked.
- by gabriel
Thu Feb 05, 2009 3:29 pm- Forum: Problem Solving
- Topic: Need help with the questions I got wrong
- Replies: 1
- Views: 1236
Re: Resolve
There are four sizes in that department; S, M, L and XL . (1/3)(M) = S (1/2)(S) = L XL = L S +M+ L + XL (1/3)(M)+M+(1/2)(1/3)(M)+(1/2)(1/3)(M) = M/3+3M/3+M/6+M/6 = 10M/6 = Total M/Total = 6/10 = 60% Lol cute kid, but is there a point behind posting the picture.
- by gabriel
Tue Feb 03, 2009 6:55 pm- Forum: Problem Solving
- Topic: How to solve this question
- Replies: 11
- Views: 15448