Nandini_bm

Can anyone explain me please sum no 11, 12, 15 and 16 as of now? Please guyz do reply to my msg

Hey bkc can you explain me how you did this sum?

Hey thanx a lot. But I am still confused with these two sums. I am not a maths student so... 2. Given a table X - 0 1 f - n 100-n Col A: Value of n for mean to be greater than 0.5 Col B: 50 for n=49,51 mean is greater than 0.5....... so answer is D........ Why did you take 49, 51???? 3. If S1 = 2 and if Sn =S(n-1)*1/2 then Col A: S6 Col B: 2^14(S20) 2,1,1/2,1/4,1/8,.... 2^1,2^0,2^-1,2^-2,2^-3,.... (I didn't get this step) S6 is : 2^-4 S20 is: 2^-18 2^14(S20) = 2^14 (2^-18) = 2^-4 answer C....

Hey lime can you explain me this problem again? I didn't get it.

Few more problems. I'll be adding new problems in this thread or else i'll make one more thread. 3. If x > 0, then Col A: 2^2 * sqrt(x) Col B: 4^2 * sqrt(x^2) Q Given a table of Category and Number of students Elementary school 5 Junior school 4 High school 17 College 9 If total students = 35 Col A: probability that a student chosen randomly will not cross junior school Col B: probability that a student chosen randomly is from college 9. Given slope as 2.5 and a point on the line as (30, 50). Col A: y-intercept Col B: xxx (some value) 3. If y(0.375) = 1, then (y^2 -1) = ? Q. Col A: (-36)^49 Col B: 36^(-49) 11. For a series S1, S2, S3.......Sn. If S2 = 2 & Sn = Sn-1 + 2S2, then find S18? 20. Given y = ax + b, such that slope of line = 2 and x-intercept = 5. Col A: y-intercept Col B: -10 24. Given equation of parabola as y = x^2+3. If the point A = (2, k) is on the parabola and B is the point at which it cuts y-axis, then AB = A. 2 B. 3 C. sqrt(5) D. sqrt(5) + sqrt(3) E. sqrt(5) - sqrt(3)25. Given equation of line as 2x+3y=1. Col A: x-intercept Col B: 1/2 34. If the area of triangle with vertices (k, k), (k+4s, k), (k, k+s) is 32, then the value of s is? 3. If n Col A: Mean Deviation of 1, 2, 1 Col B: Mean Deviation of 1, 2, n. 8. Given, the length & breadth of a rectangle as ‘l’ and ‘b’, if the length of the rectangle is increased by 80% and breadth of the rectangle is increased by 20%, then Col A: The percentage increase in area Col B: 70% 15. Given there are 800 doctors who says 'yes' to the drugs P, Q, R that they work effectively. P drug....some 38% Q drug....some 52% R drug.....some 71% now, how many doctors say "yes" to Q drug and "don't say yes" to the drug R? A. 312 B. 910 & so on.... 16. Given two straight lines x+y = 1 & 2x+2y = 8, then Col A: The shortest distance between the two lines Col B: 3 If possible try and give explanation for the problems.

Thanks a lot Penicillin. I got Q. 20. Actually i was reading it as a raise to -2 and -1. so i wrote the equation as 1/a^2 + 1/6a + 9 = 0

1. If an integer n>2 takes the form k! And this satisfies if and only if the product of the 'n' numbers in that factorial should be less than or equal to k. Col A: n!/(n-1)! Col B: n!-(n-1)!/(n-2)! 2. Given a table X - 0 1 f - n 100-n Col A: Value of n for mean to be greater than 0.5 Col B: 50 3. If S1 = 2 and if Sn =S(n-1)*1/2 then Col A: S6 Col B: 2^14(S20) 4. A bar graph with number of students and marks obtained. Marks - 40 60 70 80 90 No.of 3 4 14 8 11 students If the total number of students is 40, then Col A: Median of the data Col B: Average of the data (@ all: this is the appropriate question) 5. If 14% people have ovens and 27% have washing machines, then what is the range of the people having neither oven nor washing machines? A. 0-14% B. 27-41% C. 59-73% D. 73-86% (Options were something like that) 6. For a line 'l', if x-intercept = y-intercept = 4, then Col A: Slope of line 'l' Col B: -1 7. If 2 Col A: 6 - a Col B: b - 6 8. If there is a list of some numbers, whose mean is 10.8 and standard deviation is '0', then Col A: Range of that list Col B: 0 9. If 'x' is 130% of 'y', then 'y' is what percentage of x? 10. If the total amount is calculated, by multiplying the number of goods and the price of each good, then if the number of goods is decreased by 20%, by what percentage must the price should increase to compensate the decrease? 11. If xy =! 0 and y^-1 = 3x^-1, then which of the following is equivalent to it? Options in terms of x & y were given (To the given options, examiners answer: y = x/3) 12. If 0 Col A: x/y Col B: y/z 13. If b = -8 & (a+b)^2 = 36, then Col A: a Col B: 14 14. In 1990, the wages of the employees in a company is 'x'. If from 1990-1995, the increment of wages is 15% and from 1990-2000 the increment is 30% then Col A: Percentage increment form 1995-2000 Col B: 15% 15. How many number of even squares are their between 60 and 625. A. one B. Two & so on..

23. Given A+L =130. If ‘A’ is the area of rectangle and ‘L’ is the length of the rectangle. Find the value of A? (Provided ….the breadth ‘B’ is given as 6) I think the answer is 18.57. A+L = 130. (A is area, so it is L*B) Substitute in the place of A. it will be L*B + L = L*6 + L = 7L. 7L = 130 Ans is 18.57. Let me know if I am wrong.

Why -100? Greater than -3 and less than 0 will be -1 or -2. If we take 1/-1 = -1>-3 or 1/-2 = -0.5 > -3 So the ans is col A

I think the answer is a = -1. we get the equation that we have to solve i.e. 9a*2 +6a+1 = 0

Lets try and solve the problems given below. Helpful for people who are giving GRE in oct. I'll be posting other problems later. Can someone help me out first with these problems. Taken from Dr. Raju's site. 1. The value of (51!-50!)/(50!-49!)is........ 3. How many even integers have squares between 37 and 621? 4. There is a list of 12 numbers, all are positive & even and their some is given as 50. Col A: Range of these twelve numbers Col B: 20 5. Given that, if x and y are decimals, then x+y when rounded to 100th decimal it is equal to x. Col A: y Col B: 0.007 6. If x & y are both greater than 0, then Col A: sqrt (10x) * sqrt (10y) Col B: 10 * sqrt (xy) 7. Given that, if ‘x’ belongs to a set of prime numbers less than 10 and y belongs to a set of prime numbers greater than 10, then Col A: (-1)^x+y Col B: (-1)^xy 8. If 180 is the number of ways in which letters of a word is arranged, then which of the following words can be arranged in the same number of ways? A. CABBIE B. DEBBIE 9. In a distribution of 8500 parameters, if 26.7 is 56 percentile & 37.1 is 78 percentile, then what is the percentile of x (26.7 A. 1888 B. 4750 C. 6650 & so on.... 10. Given 2 Col A: a-b Col B: 4 11. Given 'N' is a positive integer, such that when it is multiplied with 3/5 and the resultant is divided with 7/10 then its equal to which of the following A. N*(6/7) B. N/(5/2) & so on... 12. Given two circles that are concentric having radii 2, 5. If the tangent to the smaller circle intersects the bigger circle at ‘S’ and ’T’, then find the length of ‘ST’? 13. If slope of first line is -2 and other line is ½, then find the angle between the lines? 14. If 0 Col A: b/a Col B: c/b 15. A triangle with three sides were given as a = 4, b = 3, c = 6 Col A: Angle between sides a and b Col B: 90 16. If n > 10000, then Col A: thousand's digit of n/8 Col B: 7 17. If a parallelogram has side 16 and 10, then Col A: the area of parallelogram Col B: 155 18. If a probability of receiving a busy tone in a call is 1/3, then Col A: Call made for time probability of not receiving a busy tone Col B: 1/4 19. Col A: The units digit in 86^34 Col B: 6 20. If a*-2 + (a*-1)6 + 9 = 0, then what is the value of ‘a’? 21. In a total of 36 members, if 10 play chess, 16 play cricket and 20 play none of them, then what is the number of members who play any one of these games? 22. If -3 Col A: 1/x Col B: -3 23. Given A+L =130. If ‘A’ is the area of rectangle and ‘L’ is the length of the rectangle. Find the value of A? (Provided ….the breadth ‘B’ is given as 6)

Well I don't know if my analysis is correct or not. What i thought i just wrote..:D

I think you have written it nicely but need to pay attention on your spellings. I felt itz little tough argument. good attempt. I'll try and write about this argument and probably then i can comment more on your argument.