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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

The best way to solve such questions is to substitute values for n and p.

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

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

No, trigonometry is not tested on the GMAT

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