rookie2005

The OA says E (no explns) but not completely convinced my understanding was Stmt1 and Stmt2 are clearly insufficient Basically using stmt 1 and stmt 2 one can figure out that the line cuts through III, II and the I quadrants if extended sufficiently. The probability of a point on the line with both x and y coordinates being negative happens only in the III quadrant hence probability = 1/3 so C :rolleyes: Could someone help please

if point (p,q) is on a certain line segment, what is the probability that both p and q are negative ? 1) point b (-5,-8) is on the line 2) point c (-3,0) is on the line

very cool Arjmen! :tup:

Prime factorize the denominator and see if there are numbers other than 2 and 5 as prime factors , if there are eliminate those fractions. 196 has 7 and 144 has 3

The total number of ways of putting 4 letters into 4 envelopes can be 1) Case where an envelope can take any number of letters, ie some may be empty and others might have more than 1 = 4*4*4*4 = 4^4 2) Case where every envelope must have atleast one letter = 4*3*2*1 = 24 Why is everyone adding 4 + 4 +4 +4 , Please explain

None match the answer Should be 23 Total ways of putting 4 letters in 4 envelopes (assuming an envelope can only hold one letter) = 4 * 3 * 2 *1 = 24 Total ways of putting all letters in their correct envelopes = 1 Total ways of NOT putting them correctly = 24 -1 = 23

The language was a bit confusing: if Six different balls => Balls A, B, C, D, E, F answer: 3 * 2 * 1 * 3 * 3* 3 = 162 If not then (balls are identical) only three possible sets of numbers satisfy the condition 1 + 2 + 3 ( # of ways = 3! = 6) 1 + 1 + 4 ( # of ways = 3!/2 = 3) 2 + 2 + 2 ( # of ways = 1) Total # of ways = 6 + 3 + 1 = 10 ways

If OA says A , then I guess its wrong :) It should be C , an assumption must support the conclusion. A is a good choice if one is attempting to weaken this argument. The argument is attempting to build a causal relationship between taking courses and reduction in crime Choice A attempts to break this causal relationship : Whether one takes the course or not , the person is likely to commit a crime if he was intending to so Choice C on the other hand clearly establishes this causal relationship by eliminating a weakness in the argument.

CTG , if you search the forum everyone is using a different formula. Just confirm it using Venn Diagram.

E based on parallelism

Agree with 10 AUBUC=A+B+C-(AnB+BnC+AnC) - 2(AnBnC) + neither 100 = 50 + 30 + 20 - (% who like 2 products) - 2(5) + 15 => (% who like 2 products) = 5% participants who liked more than one of the three products = # who liked 2 products + # who liked all three products = 5 + 5 = 10%

opt D

serena pls explain - OA is C

opt C Banning red cars from the roads will not solve any problem since, the accidents occur because of reckless drivers not because of the color of the car . In other words , removing red cars does not affect the # of reckless drivers and hence the accident rates.

prefer E problem with B is the usage of 'which' (non-essential modifier) , should use 'that' (an essential modifier) to modify 'Hunnish troops'.

Joseph: My encyclopedia says that the mathematician Pierre de Fermat died in 1665 without leaving behind any written proof for a theorem that he claimed nonetheless to have proved. Probably this alleged theorem simply cannot be proved, since---as the article points out---no one else has been able to prove it. Therefore it is likely that Fermat was either lying or else mistaken when he made his claim. Laura: Your encyclopedia is out of date. Recently someone has in fact proved Fermat’s theorem. And since the theorem is provable, your claim---that Fermat was lying or mistaken---clearly is wrong. Which one of the following most accurately describes a reasoning error in Laura’s argument? (A) It purports to establish its conclusion by making a claim that, if true, would actually contradict that conclusion. (B) It mistakenly assumes that the quality of a person’s character can legitimately be taken to guarantee the accuracy of the claims that person has made. © It mistakes something that is necessary for its conclusion to follow for something that ensures that the conclusion follows. (D) It uses the term “provable” without defining it. (E) It fails to distinguish between a true claim that has mistakenly between believed to be false and a false claim that has mistakenly been believed to be true.

OA is 2100

A code consists of three of the 26 alphabets. The first and third alphabets are different consonants and the second alphabet is a vowel. How many such codes are possible?

repeated post by mistake

Thanks chix4ntu and everyone else. looks like a conditional prob question. Great Q

went with the same approach as preity, only difference being that I multiplied by 1/2 since there are two rooms P(Required) = P(Choosing Room A) * P(Man in Room A) = 1/2 * 7/5 = 7/10 Something looks odd:whistle:

I got confused on this one , pls help. Is the solution correct on this one as given by dileepsh ? I am getting 7/10 ....

Please explain your approach Favorable Unfavorable Not Sure Candidate M 40 20 40 Candidate N 30 35 35 The table above shows the results of a survey of 100 voters each responded “favorable” or “unfavorable” or “not sure” when asked about their impressions of candidate M and of candidate N. What was the number of voters who responded “favorable” for both candidates? (1) The number of voters who did not respond “favorable” for either candidate was 40. (2) The number of voters who responded “unfavorable” for both candidates was 10.

There is substantial evidence that certain forms of solar energy either now or within a few years will be economically competitive with conventional sources of heat and power. A. either now or within a few years will be economically competitive with conventional sources of heat and power B. will either be economically competitive with conventional sources of heat and power within a few years or are so now C. will be economically competitive with conventional sources of heat and power either now or within a few years D. either are now economically competitive with conventional sources of heat and power or will be so within a few years E. are either now or will be within a few years economically competitive with conventional sources of heat and power

According to a recent survey of municipal services, the city's streets could be cleaner, its fire code be better enforced, and its crime rate reduced if the current administration improved its management practices. A: be better enforced, and its crime rate reduced B: better enforced, and its crime rate reduced C: could be better enforced, and it could reduce its crime rate D: better enforced, and its crime rate could reduce E: could be better enforced, and its crime rate reduce