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I consider my explanation above to be my best attempt, especially considering this was about 2 years ago. So I will have to agree to disagree and allow you your opinion. I will submit that D is a fairly reasonable answer and so you should be fine on the actual GMAT. The one takeaway I would encourag...

by albatross86

Fri Nov 02, 2012 2:50 pm
Forum: Reading Comprehension
Topic: Blue print
Replies: 7
Views: 5341

Sure. Even if it only caters to health conscious customers, C directly provides evidence that we can sell the product at a high price which indicates that the high costs are justified and profitability will be possible. D only says the market is not limited - it says nothing about whether people are...

by albatross86

Thu Oct 04, 2012 6:09 pm
Forum: Critical Reasoning
Topic: Why?
Replies: 6
Views: 2992

Oh I see what you mean now :) Glad you solved it!

by albatross86

Wed May 25, 2011 7:21 am
Forum: Problem Solving
Topic: digit issue
Replies: 26
Views: 11826

ngkontos,

You're missing the fact that A must be = 1. When you say 94 + 17 = 111, you are suggesting that A = 9, you should write it as 17 + 94 = 111 which means that A = 1 and C = 9 ... i.e the answer is (d)

The question is worded perfectly. Give it some thought :)

by albatross86

Wed May 25, 2011 7:12 am
Forum: Problem Solving
Topic: digit issue
Replies: 26
Views: 11826

Hi ngkontos, Actually your example is perfectly correct but you have arranged the data incorrectly, it should be 17 + 94 = 111 where C = 9 (i.e. D, which is the correct and only answer) If you arrange it as 94 + 17 = 111 you are suggesting that in the equation AB + CD = AAA, A is 9 in the LHS and 1 ...

by albatross86

Wed May 25, 2011 6:37 am
Forum: Problem Solving
Topic: digit issue
Replies: 26
Views: 11826

Hi All, I have a doubt regarding this problem.. Why cant it be like 98 +13 so that C is 1? 1 is also one of the options right? Hope am right am clear.. Thanks, cricketsteve Hi, Remember that it the equation is AB + CD = AAA In your scenario, (98+13) where C = 1, A here = 9. which means the equation...

by albatross86

Sun Oct 31, 2010 6:02 am
Forum: Problem Solving
Topic: digit issue
Replies: 26
Views: 11826

Looks like I'm rusty! I guess we are overcounting by this method in some way though I'm finding it difficult to put my finger on. I'm guessing I screwed up in splitting the problem up somehow. There is a detailed explanation here: http://www.gmatdaily.com/20091030-answer.html Let me know if that is ...

by albatross86

Sun Sep 12, 2010 6:51 am
Forum: Problem Solving
Topic: 3 digit number
Replies: 12
Views: 3288

Well it wasn't really pointless because you had to come up with the fact that there would be 64 numbers for each digit place possibility. You could come up with that in other ways too, but I find this total possible numbers divided by number of digits quite easy. This is definitely a Quant 50 to 51 ...

by albatross86

Sun Sep 12, 2010 6:30 am
Forum: Problem Solving
Topic: Sum of 4 digits
Replies: 10
Views: 9301

Let the number be ABC We MUST have 2 and 6 in this number. So first let's see how many ways we can do that. Split the problem into 2 parts: 1. How many ways can we arrange these two digits 2 and 6 which must compulsorily be there, into 3 different places, where position/order matters? 2. How many wa...

by albatross86

Sun Sep 12, 2010 5:47 am
Forum: Problem Solving
Topic: 3 digit number
Replies: 12
Views: 3288

Alright I'll have a crack at this, Donny ;) So any four digit number "ABCD" where those are the individual digits, can be represented as follows: 1000A + 100B + 10C + D First let's figure out how many 4 digit numbers can be formed: = 4*4*4*4 = 256 Now this next part is going to be a bit tough to exp...

by albatross86

Sun Sep 12, 2010 5:36 am
Forum: Problem Solving
Topic: Sum of 4 digits
Replies: 10
Views: 9301

Ermm.. read your explanation. I had the formula memorized so never quite bothered to dwell too much into it. You're reasoning is rock solid. I concede ! :) Hah no worries :) Actually this sort of Prime factorization related question is becoming increasingly common I've noticed. Good to get used to ...

by albatross86

Thu Sep 02, 2010 7:47 am
Forum: Problem Solving
Topic: sets permutation and combination
Replies: 9
Views: 1194

But be assured, this question would not appear on GMAT. GMAT does not test your knowledge of knowing a complex formula but your application of simple formulas. I don't quite agree. There's no real complex formula involved here - it is rather intuitive to realize that counting 3s is going to give yo...

by albatross86

Thu Sep 02, 2010 7:31 am
Forum: Problem Solving
Topic: sets permutation and combination
Replies: 9
Views: 1194

Good question - I don't think I've ever seen one like this before. I'm not sure I am right but let me know what the OA is: First thing you should realize is that you are going to have more 2s than 3s in the prime factorization of 25! This should be fairly obvious since 2 is a more commonly recurring...

by albatross86

Thu Sep 02, 2010 7:28 am
Forum: Problem Solving
Topic: sets permutation and combination
Replies: 9
Views: 1194

You've reached: x^2 < x Now we know: x^2 > 0 (since all squares are going to be positive) So if x > x^2 then obviously x is also > 0 The only interval on the number line in which x^2 happens to be less than x is in the interval 0 to 1. For any x > 1, x^2 is ALWAYS > x This is because from 0 to 1, ex...

by albatross86

Wed Sep 01, 2010 11:21 am
Forum: Problem Solving
Topic: inequality
Replies: 2
Views: 810

Hi,

See if my explanation on a parallel post helps: http://www.beatthegmat.com/post262563.html#262563

Cheers :)

by albatross86

Wed Sep 01, 2010 11:15 am
Forum: Critical Reasoning
Topic: Good CR!
Replies: 3
Views: 1096