Search found 164 matches
Hi! I hope I understand your question correctly. Look at our series: 5,5,5,5,5,6,6,6,6,6,6,7,7,7,7,7,7,7.... an There are 1000 terms in the series. the 5 first terms all are equal to 5 the 6 next terms all are equal to 6 the 7 next terms all are equal to 7 we are looking for an: 5 - 14 5 + 6 + 7 + 8...
- by Maciek
Thu Sep 16, 2010 10:25 am- Forum: Problem Solving
- Topic: Number Systems (Arthimetic Progression)
- Replies: 4
- Views: 1577
Hi! This question is also included in "300+ GMAT Math questions with Best Solutions". The explanation is following: Here, we have 4 digits (positive integer less than 10000 means that 9999 is the biggest and we can pretend that "5" is "0005") that must sum to 5. Since w...
- by Maciek
Thu Sep 16, 2010 9:23 am- Forum: Problem Solving
- Topic: the sum of the digits equals 5
- Replies: 6
- Views: 7054
Hi! This question is tricky. Not only does it test your knowledge about usage of paired conjunction 'not only ... but also', but it also tests your knowledge about parallelism, modifiers, and logic of the sentence. (A) "did... create... and gave" verbs are not parallel (B) modifier error (...
- by Maciek
Thu Sep 16, 2010 9:05 am- Forum: Sentence Correction
- Topic: Not only..but also construction question. Source: GMAT Prep
- Replies: 5
- Views: 3120
- by Maciek
Thu Sep 16, 2010 2:22 am- Forum: Sentence Correction
- Topic: Few/A few/ little/ a little problem
- Replies: 5
- Views: 1705
We can't use past perfect here because events occur during the same time period. So, they must be in the same tense.
- by Maciek
Thu Sep 16, 2010 2:18 am- Forum: Sentence Correction
- Topic: Modifier & tense problem
- Replies: 5
- Views: 1451
Hi! There are few issues here: quantity adjectives countable and uncountable nouns, and subject-verb agreement 1) quantity adjectives with countable and uncountable nouns We use 'little' with uncountable nouns and 'water' is uncountable noun. We use 'few' with countable plural nouns and 'services' i...
- by Maciek
Thu Sep 16, 2010 1:50 am- Forum: Sentence Correction
- Topic: Few/A few/ little/ a little problem
- Replies: 5
- Views: 1705
Hi! IMO E This answer doesn't include verb tense error. Read "Top 10 Tips for the Sentence Correction Section" by Chris Black http://www.beatthegmat.com/mba/2010/09/08/top-10-tips-for-the-sentence-correction-section Read more about modifiers http://www.studygs.net/modcom.htm Hope it helps!...
- by Maciek
Thu Sep 16, 2010 1:19 am- Forum: Sentence Correction
- Topic: Modifier & tense problem
- Replies: 5
- Views: 1451
Hi all! IMO E There are following issues here: idiom, modifier, and logical structure 1) idiom correct idiom is "as ... as" According to dictionary.reference.com, this expression is "used to express similarity or equality in a specified characteristic, condition, etc., as between one ...
- by Maciek
Wed Sep 15, 2010 1:57 am- Forum: Sentence Correction
- Topic: kneton sc 4 as 5
- Replies: 2
- Views: 1596
Hi! IMO D There are 3 issues here: appropriate verb tense, parallelism, and pronoun-antecedent agreement. 1) appropriate verb tense We use the past perfect for an action which finished in the past and whose result was visible in the past. Therefore, past perfect is appropriate here. There is 3/2 spl...
- by Maciek
Wed Sep 15, 2010 1:13 am- Forum: Sentence Correction
- Topic: knewton-sc 4 v4
- Replies: 3
- Views: 1401
It is great progress.
Congratulations!
I hope your first application will be successful.
Best,
Maciek
- by Maciek
Tue Sep 14, 2010 10:51 am- Forum: I just Beat The GMAT!
- Topic: 490->710 (Q48, V40) Some useful tips.
- Replies: 19
- Views: 9568
Thanks for clarifying Singhsa! Check this: Breaking Down GMATPrep Weighted Average Problems (Part 1 of 2) http://www.beatthegmat.com/mba/2009/12/13/breaking-down-gmatprep-weighted-average-problems-part-1-of-2 Breaking Down GMATPrep Weighted Average Problems (Part 2 of 2) http://www.beatthegmat.com/m...
- by Maciek
Tue Sep 14, 2010 5:25 am- Forum: Data Sufficiency
- Topic: Bank Assets
- Replies: 7
- Views: 2164
Sanju09! IMO B Sum of digits of the number 8*10^k + j is equal to 8 + j. The number 8*10^k + j is divisible by 9 without remainder if 8 + j = 9 Remainder is equal to 8 + j - 9 = j - 1 (1) k = 13 Statement (1) ALONE is INSUFFICIENT. We should eliminate answer choices A and D. (2) j = 1 Remainder is e...
- by Maciek
Tue Sep 14, 2010 5:06 am- Forum: Data Sufficiency
- Topic: when 8 × 10^k + j is divided by 9
- Replies: 2
- Views: 3090
Sanju09! IMO E 225 = 3*3*5*5 = 3^2*5^2 216 = 2*2*2*3*3*3 = 2^3*3^3 Formula for least common multiple( LCM) of A and B: LCM(A,B) = |A*B|/GCD(A,B) greatest common divisor( GCD) of 225 and 216 is GCD(225,216) = 3*3 = 3^2 LCM(225,216) = |225*216|/GCD(225,216) = |3^2*5^2*2^3*3^3|/3^2 = 2^3*3^3*5^2 k = 2^...
- by Maciek
Tue Sep 14, 2010 4:56 am- Forum: Problem Solving
- Topic: k = 2^a3^b5^c
- Replies: 3
- Views: 1575
Hi! k = (x -1) (x +2) - (x -1) (x -2) = x^2 + x - 2 -(x^2 - 3x + 2) = 4x - 4 = 4(x - 1) k = 4(x - 1) (A) if x is ODD then k = 4(ODD - 1) = 4*EVEN = EVEN*EVEN = EVEN This answer choice is incorrect (B) if x is EVEN then k = 4(EVEN - 1) = 4*ODD = EVEN*ODD = EVEN This answer choice is incorrect (C) if ...
- by Maciek
Tue Sep 14, 2010 4:37 am- Forum: Problem Solving
- Topic: and k = (x –1) (x +2) – (x –1) (x –2)
- Replies: 3
- Views: 1063
Singhsa!
You will find the solution here:
http://www.beatthegmat.com/at-least-one ... tml#297230
Hope it helps!
Best,
Maciek
- by Maciek
Tue Sep 14, 2010 4:24 am- Forum: Problem Solving
- Topic: Exponents
- Replies: 1
- Views: 1147