Search found 65 matches
Guys, good explanations by all. i got to learn a lot. but if the question asked what is the largets possible integer that CAN divide n, then the answer would be E(16) right? Hi Rohu27 Question is "If m is a positive integer and m^2 is divisible by 48, then the largest positive integer that mus...
- by 6983manish
Thu Mar 31, 2011 12:20 am- Forum: Problem Solving
- Topic: Integers: Knewton Prep
- Replies: 16
- Views: 4270
AIM GMAT wrote:IMO A .
whats the source ?
OA is "A".
Could you please elaborate you approach on this ?
- by 6983manish
Wed Mar 30, 2011 8:40 pm- Forum: Critical Reasoning
- Topic: CR - Dermatitis
- Replies: 4
- Views: 1533
Problem - P & C
Each of the 11 letters A, H, I, M, O, T, U, V, W, X and Z appears same when looked at in a mirror. They are called symmetric letters. Other letters in the alphabet are asymmetric letters. How many three letter computer passwords can be formed (no repetition allowed) with at least one symmetric lette...
- by 6983manish
Wed Mar 30, 2011 7:47 pm- Forum: Problem Solving
- Topic: Problem - P & C
- Replies: 3
- Views: 5540
CR - Dermatitis
Although perioral dermatitis rashes are believed to be caused by reactions to Sodium Laurel Sulfate (SLS) found in shampoos and other personal care products, instructing patients to eliminate all products with SLS frequently does not stop the perioral dermatitis. Obviously, some other cause of peri...
- by 6983manish
Wed Mar 30, 2011 7:37 pm- Forum: Critical Reasoning
- Topic: CR - Dermatitis
- Replies: 4
- Views: 1533
CR - Budget Forecasters
Commissioner: Budget forecasters project a revenue shortfall of a billion dollars in the coming fiscal year. Since there is no feasible way to increase the available funds, our only choice is to decrease expenditures. The plan before you outlines feasible cuts that would yield savings of a billion d...
- by 6983manish
Wed Mar 30, 2011 7:32 pm- Forum: Critical Reasoning
- Topic: CR - Budget Forecasters
- Replies: 4
- Views: 2208
Hi All, Please help in the following exponents question. For how many integers n is 2^n = n^2 ? (A) None (B) One (C) Two (D) Three (E) More than three Answer is C Thanks & Regards Sachin By plugging in , for n = 1 , 2^1 = 2 <> 1^2 = 1 for n = 2 , 2^2 = 4 = 2^2 = 4 for n = 3 , 2^3 = 8 <> 3^2 = 9...
- by 6983manish
Wed Mar 30, 2011 11:00 am- Forum: Problem Solving
- Topic: Exponents
- Replies: 6
- Views: 1647
If m is a positive integer and m^2 is divisible by 48, then the largest positive integer that must divide m is A) 3 B) 6 C) 7 D) 12 E) 16 m^2=48k; where k is an integer; taking square root we have; m=4 sqrt(3k); i.e. m must be multiple of 4 therefore option a,b,c are straight away out; now lets see...
- by 6983manish
Wed Mar 30, 2011 7:40 am- Forum: Problem Solving
- Topic: Integers: Knewton Prep
- Replies: 16
- Views: 4270
If m is a positive integer and m^2 is divisible by 48, then the largest positive integer that must divide m is A) 3 B) 6 C) 7 D) 12 E) 16 m^2=48k; where k is an integer; taking square root we have; m=4 sqrt(3k); i.e. m must be multiple of 4 therefore option a,b,c are straight away out; now lets see...
- by 6983manish
Wed Mar 30, 2011 5:32 am- Forum: Problem Solving
- Topic: Integers: Knewton Prep
- Replies: 16
- Views: 4270
If m is a positive integer and m^2 is divisible by 48, then the largest positive integer that must divide m is A) 3 B) 6 C) 7 D) 12 E) 16 m^2=48k; where k is an integer; taking square root we have; m=4 sqrt(3k); i.e. m must be multiple of 4 therefore option a,b,c are straight away out; now lets see...
- by 6983manish
Tue Mar 29, 2011 11:55 pm- Forum: Problem Solving
- Topic: Integers: Knewton Prep
- Replies: 16
- Views: 4270
If m is a positive integer and m^2 is divisible by 48, then the largest positive integer that must divide m is A) 3 B) 6 C) 7 D) 12 E) 16 Lets try plugging in. m^2 = 48 * x ( x is an positive integer ) Lets calculate the multiples of 48 which are perfect squares - 48 , 96 , 144 , 192 , 240 , 288 .....
- by 6983manish
Tue Mar 29, 2011 11:33 pm- Forum: Problem Solving
- Topic: Integers: Knewton Prep
- Replies: 16
- Views: 4270
After analyzing this problem some more, I've come to the conclusion that I don't like this question lol. What's the source? If I had to pick an answer, I'd pick A . Here's how I thought of it: Premises - 80% of potential donors contacted gave money. Old donors more likely to give money. Good fundra...
- by 6983manish
Tue Mar 29, 2011 9:37 pm- Forum: Critical Reasoning
- Topic: CR Problem
- Replies: 4
- Views: 1821
Functions
If x is a positive integer, f(x) is defined as the number of positive integers which are less than x and do not have common factor with x other than 1. If x is prime then f(x) = ?
(A) x - 2
(B) x - 1
(C) (x + 1)/2
(D) (x - 1)/2
(E) 2
- by 6983manish
Tue Mar 29, 2011 8:09 pm- Forum: Problem Solving
- Topic: Functions
- Replies: 5
- Views: 1056
Power of exponents
Which expression has the greatest value?
(A) 1^{999}
(B) 2^{300}
(C) 3^{200}
(D) 4^{100}
(E) 16^{50}
- by 6983manish
Tue Mar 29, 2011 8:06 pm- Forum: Problem Solving
- Topic: Power of exponents
- Replies: 2
- Views: 901
CR Problem
Smithtown University’s fund-raisers succeeded in getting donations from 80 percent of the potential donors they contacted. This success rate, exceptionally high for university fund-raisers, does not indicate that they were doing a good job. On the contrary, since the people most likely to donate a...
- by 6983manish
Tue Mar 29, 2011 9:10 am- Forum: Critical Reasoning
- Topic: CR Problem
- Replies: 4
- Views: 1821
Getting 4/5 ==> [(1/3)^4 * (2/3)^1) 5C4 = 10/243 6983manish, could you explain the equation here? Here we are to find the probability of getting 4 correct answers out of 5 questions. As each questions has 3 options and 1 correct answer out of these options. Probability of correct answer while attem...
- by 6983manish
Tue Mar 29, 2011 8:57 am- Forum: GMAT Math
- Topic: Probability
- Replies: 5
- Views: 2573