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If k=m(m+4)(m+5) k and m are positive integers. Which of the following could divide k evenly? I.3 II.4 III.6 I dont have the options. I do have the answer, but I think it is wrong,

On how many ways can the letters of the word "COMPUTER" be arranged such that the vowels occupy even positions. My ans: 3!*4c3*5! In how many ways can one choose 6 cards from a normal deck of cards so as to have all suits present?

Basic qn: When the qn stub says an integer n lies betn two integers x & y - are we to consider x & y as well ? (This will impact the probability of an event )

If the smallest number in a set of positive integers is 3, how many numbers does the set have? 1). The average of the set is 6 2). The range of the set is equal to the average of the set Does a set mean that it contains only distinct elements ? i.e no two numbers in the set are equal ? Sorry, no OA.

From stmt 1: assuming that my paranthesis assumptions are correct - (x+1)/y=1/(x+y) x^2+x+xy+y=y x(x+y+1)=0. x=0 or x+y = -1. So, xy =-1 cant be said true for sure... Though I'm not able to prove this or think of a combination whr this works..

10*2/31 = ~0.64 > 1/2

Without any constraints: Each one can be a boy or a girl. 2^3 = 8 Now, we need to pick a family where there are exactly 2 boys. 1,2 can be boys, or 2,3 can be boys or 3,1 can be boys. 3/8. (This can also be arrived at using 3c2). Ans: 3/8

Got a question for you guys - I made 3 mistakes in PR test. one in the first 15, 24, 31. But my math score was only 48 ! Is this how the real GMAT scoring would be ?? Now I'm fidgeting a little bit.. :((

Aaah, goodness.. yes!

Guys, any thoughts ?

Set T is an infinite sequence of positive integers. A "superset" is a sequence in which there is a finite number of multiples of three. Is T a superset? (1) The first six integers in T are multiples of three. (2) An infinite number of integers in T are multiples of four. OA is E. However, here is my reasoning: If set T contains an infinite no of multiples of 4 (4,8,12 etc) then it will contain an infininte no of multiples of 12 . Consequently, there will be an infinite no of multiples of 3. So, the answer to 'Is T a superset' is NO. So I picked B. What am I missing ? Thanks !

Betn C & D: The amount of money a nation spends on research and development is directly relocated to the number of inventions patented in that nation. - There is no direct proof that investment is what affects the no of patents. There could be other factors as well.. Between 1964 and 1978 the United States consistently spent a larger percentage of its GNP on research and development than did Japan. - Consistently ?? -> It is possible that Japan spent a little more than US in one isolated yr and then pared it to 1.6.. Though US's decline was steady there is nothing that prevents Japan from increasing it drastically and then reducing it later, to finally stabilize it at 1.6..Of course, given these options I 'll pick D. But, imo D has a hole..

2 - I read it as 'no more'.. Grr...I've GOT to start reading the qns well if I dont want to kill myself post GMAT :( Thanks check.stone for pointing out the error..

1/ The unemployment rate in the United States fell from 7.5 percent in 1981 to 6.9 percent in 1986. It cannot, however, be properly concluded from these statistics that the number of unemployed in 1986 was lower than it had been in 1981 because-----. (A) help-wanted advertisements increased between 1981 and 1986 (B) many of the high-paying industrial jobs avail- able in 1981 were replaced by low-wage ser- vice jobs in 1986, resulting in displacements of hundreds of thousands of workers © in some midwestern industrial states, the unem- ployment rate was much higher in 1986 than it had been in 1981 (D) the total available work force, including those with and without employment, increased between 1981 and 1986 (E) the average time that employees stay in any one job dropped during the period 1981 to 1986 (I think OA is wrong here.) 2/ President of the United States: I have received over 2,000 letters on this issue, and the vast majority of them support my current position. These letters prove that most of the people in the country agree with me. Which of the following, if true, most weakens the President's conclusion? (A) The issue is a very divisive one on which many people have strong opinions. (B) Some members of Congress disagree with the President's position. © People who disagree with the President feel more strongly about the issue than do people who agree with him. (D) People who agree with the President are more likely to write to him than are people who disagree with him. (E) During the presidential campaign, the President stated a position on this issue that was some- what different from his current position. OA says D. Did they mean strength, rather than weaken ?? D strengths the President's stand by saying that the likelihoods of writing to the president are the same from both factions. 3/ Despite the approach of winter, oil prices to indus- trial customers are exceptionally low this year and likely to remain so. Therefore, unless the winter is especially severe, the price of natural gas to indus- trial customers is also likely to remain low. Which of the following, if true, provides the most support for the conclusion above? (A) Long-term weather forecasts predict a mild winter. (B) The industrial users who consume most natural gas can quickly and cheaply switch to using oil instead. © The largest sources of supply for both oil and natural gas are in subtropical regions unlikely to be affected by winter weather. (D) The fuel requirements of industrial users of nat- ural gas are not seriously affected by the weather. (E) Oil distribution is more likely to be affected by severe winter weather than is the distribution of natural gas.

Hi, Anyone help with a method to solve this one ??