Search found 283 matches
Hello, Can you please assist with this? Which of the following points lies outside circle x^2 + y^2 = 25? (A) (4, 3) (B) (-4, -3) (C) (9, 6) (D) (2, 2) (E) (2, 4) OA: C Thanks a lot, Sri The general equation for a circle with center (A,B) and radius r is: (x-A)^2 + (y-B)^2 = r^2 Comparing this with...
- by ganeshrkamath
Sun Jan 19, 2014 9:00 pm- Forum: Problem Solving
- Topic: To find the points outside the circle
- Replies: 4
- Views: 1629
Hello, Can you please assist with this: Sixty percent of the population of town X are employed; of those employed 40% are men, what percentage of the total population are employed women? (A) 12 (B) 24 (C) 36 (D) 40 (E) 60 OA: C My approach is as shown in the double set matrix. I was thinking that 3...
- by ganeshrkamath
Sun Jan 19, 2014 8:56 pm- Forum: Problem Solving
- Topic: To find the percentage of employed women
- Replies: 3
- Views: 1304
Hello, Can you please assist with this: In a sequence X1, X2, X3,… Xn, ….. ; Xn+3 = Xn+2 + Xn+1 + Xn, is X8 odd? (1) X1 is odd (2) Exactly one of the terms X1, X2, and X3 is odd OA: B Thanks a lot, Sri X4 = X1 + X2 + X3 X5 = X2 + X3 + X4 = X2 + X3 + (X1 + X2 + X3) = X1 + 2X2 + 2X3 X6 = X3 + X4 ...
- by ganeshrkamath
Sun Dec 22, 2013 8:45 pm- Forum: Data Sufficiency
- Topic: Is the term odd?
- Replies: 2
- Views: 1494
Hello, Can you please assist with this: In a coordinate system, how many points (x,y) simultaneously satisfy the conditions |x| + |y| ≤ 1 and x^2 + y^2 = 1? (A) exactly one (B) exactly two (C) exactly three (D) exactly four (E) infinite points OA: D Thanks, Sri Some points that satisfy |x| + |y| ...
- by ganeshrkamath
Sun Dec 22, 2013 8:27 pm- Forum: Problem Solving
- Topic: Co-ordinate system question
- Replies: 2
- Views: 1478
A rectangular solid is changed such that the width and length are increased by 1 inch apiece and the height is decreased by 9 inches. Despite these changes, the new rectangular solid has the same volume as the original rectangular solid. If the width and length of the original rectangular solid are...
- by ganeshrkamath
Thu Dec 12, 2013 6:16 am- Forum: Problem Solving
- Topic: A rectangular solid is changed
- Replies: 4
- Views: 2268
If the operation # is defined for all integers a and b by a#b = a+b-ab, which of the following statements must be true for all integers a, b and c? I. a#b = b#a II. a#0 = a III. (a#b)#c = a#(b#c) - I only - II only - I and II only - I and III only - I, II and III only I. a#b = a+b-ab = b+a-ba = b#a...
- by ganeshrkamath
Wed Dec 11, 2013 9:34 pm- Forum: Problem Solving
- Topic: best way to solve this symbolism?
- Replies: 1
- Views: 1156
A thin piece of wire 40 meters long is cut into two pieces. One piece is used to form a circle with radius r, and the other is used to form a square. No wire is left over. Which of the following represents the total area, in square meters, of the circular and the square regions in terms of r? A. pi...
- by ganeshrkamath
Wed Dec 11, 2013 9:28 pm- Forum: Problem Solving
- Topic: A thin piece of wire 40 meters long is cut into two pieces.
- Replies: 8
- Views: 7990
how many such numbers are there between 1 and 500 which are multiples of 3 and 7 or of both 3 and 7??? 211 212 213 214 Multiples of 3: 3,6,9,....,498 Total = (498 - 3)/3 + 1 = 495/3 + 1 = 165+1 = 166 Multiples of 7: 7,14,21,...,497 Total = (497 - 7)/7 + 1 = 490/7 + 1 = 70 + 1 = 71 Multiples of (3*7...
- by ganeshrkamath
Sun Dec 08, 2013 2:45 am- Forum: Problem Solving
- Topic: help asap!! plzz!!
- Replies: 4
- Views: 1383
A man cycling along the road noticed that every 12 minutes a bus overtakes him and every 4 minutes he meets an oncoming bus. If all buses and the cyclist move at a constant speed, what is the time interval between consecutive buses? A. 5 minutes B. 6 minutes C. 8 minutes D. 9 minutes E. 10 minutes ...
- by ganeshrkamath
Sun Dec 08, 2013 2:39 am- Forum: Problem Solving
- Topic: Speed - Problem
- Replies: 7
- Views: 1857
Are you sure its [spoiler]{B}? [/spoiler] ; I got [spoiler]{D}[/spoiler] student : faculty = R : 1 S/F = R/1 Faculty will increase by f% ==> F + Ff/100 ==> F (1 + f/100) Students will decrease by S% = S - Ss/100 ==> S ( 1 - s/100) S ( 1 - s/100) / F (1 + f/100) R ( 100 - s)/(100 + f) I myself reach...
- by ganeshrkamath
Tue Nov 26, 2013 1:18 am- Forum: Problem Solving
- Topic: The number of students per faculty member
- Replies: 8
- Views: 1898
Right now, the number of students per faculty member is R. In 5 years, the number of faculty members will be increased by F% and the number of students will be decreased by S%. Which of the following represents the number of students per faculty member after the change? A)R B)R^-1 C)(100+S)/(100+F)...
- by ganeshrkamath
Mon Nov 25, 2013 11:20 pm- Forum: Problem Solving
- Topic: The number of students per faculty member
- Replies: 8
- Views: 1898
The Man in Picture is absconding since two days after The Murder of Roger Ackroyd. His Aid was caught by the Cops 11 days after The Murder of Roger Ackroyd or 5 days after The Absconding Man in Picture was Caught on Camera by a Media Person on 21 June 1926. If The Murder of Roger Ackroyd took place...
- by ganeshrkamath
Fri Nov 22, 2013 2:50 am- Forum: Problem Solving
- Topic: The Man in Picture
- Replies: 2
- Views: 1267
One night a certain motel rented 3/4 th of its rooms, including 2/3rd of its air-conditioned rooms. If 3/5th of its rooms were air-conditioned, what percent of the rooms that were not rented were air-conditioned? (A) 20% (B) 33*1/3% (C) 35% (D) 40% (E) 80% Q/A- E Let T be the total number of rooms ...
- by ganeshrkamath
Wed Nov 20, 2013 7:36 pm- Forum: Problem Solving
- Topic: motel
- Replies: 4
- Views: 8129
A group of pictures of butterflies contains 10 pictures. Jim had bought 3 of them. If 2 pictures are to be picked out from the 10 pictures, what is the probability that both pictures are not those that were already bought by Jim? 14/15 3/5 6/13 7/15 7/10 [spoiler]OA D I did: Total number of ways to...
- by ganeshrkamath
Wed Nov 20, 2013 6:26 am- Forum: Problem Solving
- Topic: A group of pictures of butterflies contains 10 pictures
- Replies: 5
- Views: 2064
A group of pictures of butterflies contains 10 pictures. Jim had bought 3 of them. If 2 pictures are to be picked out from the 10 pictures, what is the probability that both pictures are not those that were already bought by Jim? 14/15 3/5 6/13 7/15 7/10 [spoiler]OA D I did: Total number of ways to...
- by ganeshrkamath
Wed Nov 20, 2013 6:23 am- Forum: Problem Solving
- Topic: A group of pictures of butterflies contains 10 pictures
- Replies: 5
- Views: 2064