Search found 186 matches
Immune System
The cytokines of the immune system, acting as signalers to adjacent cells, can provoke dangerous inflammation; the resultant autoimmune disease, characterized by cartilage and bone that become damaged although they are not actually attacked by the immune system, are known as "rheumatoid arthrit...
- by jube
Thu Jul 15, 2010 8:04 am- Forum: Sentence Correction
- Topic: Immune System
- Replies: 3
- Views: 1021
OA is B.
Agree with why D & E are wrong too - my confusion was over the construction of B. According to MGMAT this kind of construction is considered to be stylistically awkward by GMAT and shouldn't be used... so was confused. Any ideas?
- by jube
Thu Jul 15, 2010 8:03 am- Forum: Sentence Correction
- Topic: Kaplan - El Salvador
- Replies: 11
- Views: 3720
Kaplan - rabbits in australia
Rabbits are not native to Australia, which lacks predators capable of keeping their numbers in check. The rabbit population, left unchecked, expands to such large numbers that it destroys large areas of pastoral land by stripping it of grass. Scientists have recently isolated a virus which has devas...
- by jube
Thu Jul 15, 2010 7:55 am- Forum: Critical Reasoning
- Topic: Kaplan - rabbits in australia
- Replies: 11
- Views: 3541
Kaplan - El Salvador
That El Salvador is pervaded by violence and stark terror was reported by Joan Didion in a disturbing series of articles recorded her impressions of the two weeks she spent in that small, remote nation. A) That El Salvador is pervaded by violence and stark terror was reported by Joan Didion in a dis...
- by jube
Thu Jul 15, 2010 7:52 am- Forum: Sentence Correction
- Topic: Kaplan - El Salvador
- Replies: 11
- Views: 3720
Hey, this one might be easy if we keep in mind that for an Arithmetic Series: 1) the median will be equal to the mean. 2) Sum/No. of Items = Mean So if I have n consecutive integers (which is an AP with difference 1) then if n is odd I will have a median which is an integer. Therefore my mean i.e. s...
- by jube
Wed Jul 14, 2010 9:47 am- Forum: Problem Solving
- Topic: Consecutive integers -MGMAT
- Replies: 11
- Views: 2181
Awesome! OA is indeed A. I was getting confused between -2^n & (-2)^n -- couldn't understand the difference. So if I'm getting this right, -x^n will always be - (x^n) i.e. we won't consider the - sign when calculating while (-x)^n will be a figure where the - sign *will* be considered when using...
- by jube
Wed Jul 14, 2010 9:40 am- Forum: Problem Solving
- Topic: MGMAT - Exponents with negative bases
- Replies: 3
- Views: 1015
MGMAT - Exponents with negative bases
Each of the following equations has at least one solution EXCEPT:
–2^n = (–2)^-n
2^-n = (–2)^n
2^n = (–2)^-n
(–2)^n = –2^n
(–2)^-n = –2^-n
- by jube
Wed Jul 14, 2010 9:15 am- Forum: Problem Solving
- Topic: MGMAT - Exponents with negative bases
- Replies: 3
- Views: 1015
- by jube
Thu Jul 08, 2010 4:56 am- Forum: Problem Solving
- Topic: (9^6) + 1 is divided
- Replies: 2
- Views: 1050
n=3a +2 t=5b + 3 1. n-2 = 5j or n = 5j + 2 AND n=3a + 2. n can be 2, 17, 32, 62 ... t= 5b + 3 = 3, 8, 13... nt = 6 -- leaves remainder 6 nt = 16 -- leaves remainder 1 - insuff. 2.t=3k & t =5b + 3. t can be 3, 18, 33.... n=3a+2 = 2, 5, 8... nt = 6 -- leaves remainder 6 nt = 15, leaves remainder 0...
- by jube
Thu Jul 08, 2010 4:47 am- Forum: Data Sufficiency
- Topic: Remainders!
- Replies: 4
- Views: 1054
IMO D
1) Suff. One can easily calculate the total no. of games lost which would be (.75)8 + (20-8)
2) Suff.
Let total no. of card games be x. Then (90x)/100 = 6 + (x-8) -- from this x & hence the no. of card games lost can be calculated
- by jube
Sun Jul 04, 2010 6:08 am- Forum: Data Sufficiency
- Topic: PRINCESTONE-GAME
- Replies: 1
- Views: 1044
I'd go with D! 1) Suff. 2) 51-25 = 26 For 1 additional person, 30,000 additional folks are needed. Therefore, for 26 additional people, 26(30000) i.e. 780000 additional folks will be needed. 780000 + 500000 = 1280000 is thrice the population. From this the original population can be calculated. What...
- by jube
Sun Jul 04, 2010 6:04 am- Forum: Data Sufficiency
- Topic: PRINCESTONE-CB
- Replies: 1
- Views: 949
Number of televisions tuned to a certain program = 44% of televisions turned on at the exact time the program was aired 1) insuff - tells us the TOTAL no. of TVs in X but not the no. of TVs which were turned on at the time the program was aired 2) Suff - 56,000 TVs were turned on but not tuned i.e. ...
- by jube
Sun Jul 04, 2010 5:55 am- Forum: Data Sufficiency
- Topic: PRINCESTONE-TV X
- Replies: 6
- Views: 1481
IMO C. 1) Insuff. since n=2 will result in 2n being an integer & n=1/2 will also result in 2n being an integer 2) Insuff since n=3 will result in 3n being an integer & n=1/3 will also result in 3n being an integer 1) & 2) since LCM of 2 & 3 is 6 and 2/6 & 3/6 is NOT an integer, t...
- by jube
Sun Jul 04, 2010 5:49 am- Forum: Data Sufficiency
- Topic: PRINCESTONE-N
- Replies: 8
- Views: 1356
- by jube
Sun Jul 04, 2010 5:41 am- Forum: Data Sufficiency
- Topic: A , B , and C are digits and AB
- Replies: 8
- Views: 3017
- by jube
Sun Jul 04, 2010 4:40 am- Forum: Critical Reasoning
- Topic: Population tuning in to news
- Replies: 8
- Views: 1476