Search found 74 matches
Word problem!
Rondo is in the market for a new car. He has narrowed his search down to 2 models. Model A costs $32,000 and Model B costs $28,000. With both cars he plans to pay cash and own them for 4 years before trading in for a new car. His research indicates that the trade in value for Model A after 4 years i...
- by Ahmed MS
Thu Feb 07, 2013 9:14 pm- Forum: Problem Solving
- Topic: Word problem!
- Replies: 1
- Views: 1755
- by Ahmed MS
Tue Nov 01, 2011 3:09 am- Forum: Data Sufficiency
- Topic: Odd integers!
- Replies: 10
- Views: 1618
As option 2 says 10 numbers in set S are multiples of 4 that means all 10 multiple numbers are even. Multiple of 4 cannot be an odd number. So rest of the 10 numbers are odd as the numbers in the set are positive and consecutive.
Then answer should be D. Correct me if I am wrong.
- by Ahmed MS
Tue Nov 01, 2011 2:02 am- Forum: Data Sufficiency
- Topic: Odd integers!
- Replies: 10
- Views: 1618
Odd integers!
Q: Set S consists of 20 different positive integers. How many of the integers in set S are odd?
1. 10 of the integers in S are even.
2. 10 of the integers in S are multiples of 4.
My answer was D but it was incorrect. How? Can anyone please explain.
Cheers!
- by Ahmed MS
Mon Oct 31, 2011 11:11 pm- Forum: Data Sufficiency
- Topic: Odd integers!
- Replies: 10
- Views: 1618
Maximum number!
Q: A grocer stocked orange in a pile. The bottom layer was a rectangular with 3 rows of 5 oranges each. If the second layer from the bottom, each orange rested on 4 oranges from the bottom layer, and in the third layer, each oranges rested on 4 oranges from the second layer. Which of the following i...
- by Ahmed MS
Mon Oct 31, 2011 11:02 pm- Forum: Problem Solving
- Topic: Maximum number!
- Replies: 2
- Views: 1543
shankar.ashwin wrote:Given S.D=0.3 and Mean =10
Within 1 SD means 10+ 0.3 (or) 9.7-10.3
Of the 8 numbers, 6 of them lie within this range (9.7-10.3)
6/8 * 100 = 75%
Thanks for your easy and quick solution.
- by Ahmed MS
Mon Oct 31, 2011 10:47 pm- Forum: Problem Solving
- Topic: SD!
- Replies: 4
- Views: 916
SD!
Q: The mean and sd of the 8 nunbers are (shown below) are 10th and 0.3, respectively. What percent of the 8 numbers are within 1 sd of the mean?
9.4, 9.9, 9.9, 9.9, 10, 10.2, 10.2, 10.5
I failed to get the right answer.
Cheers!
- by Ahmed MS
Mon Oct 31, 2011 9:54 pm- Forum: Problem Solving
- Topic: SD!
- Replies: 4
- Views: 916
Q: For a finite sequence of nonzero numbers, the numbers of variation in sign is defined as the number of pairs of consecutive terms of the sequence for which the product of the two consecutive terms is negative. What is the number of variations in sign for the sequence 1, -3, 2, 5, -4, -6? 1.One 2...
- by Ahmed MS
Sat Oct 29, 2011 11:48 pm- Forum: Problem Solving
- Topic: Number of variation!
- Replies: 4
- Views: 1084
http://s4.postimage.org/5u6b0clnd/Attach.jpg As shown in the picture, we need to find the distance between A and C which is same as distance between the center of the two wheels. Distance AC = {[ Total conveyor belt length ] - [ 2 times length of semi circle(half circumference) ] }/2 i.e AC = {[15]...
- by Ahmed MS
Sat Oct 29, 2011 11:42 pm- Forum: Problem Solving
- Topic: Distance between Two Wheels?
- Replies: 4
- Views: 4277
Well my approach was, 1. Short = X, Long= X+20 Let the rod is 100 feet, so, X+X+20=100 2X=80, X= 40, S=40, L=60 Sufficient. 2. S=X and L=3X, again X+3X=100 So X= 25, S= 25, L= 75. Sufficient. But the problem is that the values of S and L are not the same for both 1 and 2. Does the value has to be th...
- by Ahmed MS
Sat Oct 29, 2011 10:39 pm- Forum: Data Sufficiency
- Topic: Length of a Longer Piece?
- Replies: 3
- Views: 1601
Distance between Two Wheels?
Q: A thin conveyor belt is 15 feet long is drawn tightly around two circular wheels each 0.5 feet radius. What is the distance in feet between the center of two wheels?
I could not solve the problem. Please help me out!
Cheers!
- by Ahmed MS
Sat Oct 29, 2011 10:03 pm- Forum: Problem Solving
- Topic: Distance between Two Wheels?
- Replies: 4
- Views: 4277
Number of variation!
Q: For a finite sequence of nonzero numbers, the numbers of variation in sign is defined as the number of pairs of consecutive terms of the sequence for which the product of the two consecutive terms is negative. What is the number of variations in sign for the sequence 1, -3, 2, 5, -4, -6? 1.One 2....
- by Ahmed MS
Sat Oct 29, 2011 9:56 pm- Forum: Problem Solving
- Topic: Number of variation!
- Replies: 4
- Views: 1084
Length of a Longer Piece?
Q: A wooden rod cut into two pieces. What is the length of the longer piece?
1. One of the piece is 20 inch longer than other.
2. The length of the shorter piece is 1/3 length of longer piece.
My answer is D but OA is C. Can anyone help me to find out my mistake?
Cheers!
- by Ahmed MS
Sat Oct 29, 2011 8:46 pm- Forum: Data Sufficiency
- Topic: Length of a Longer Piece?
- Replies: 3
- Views: 1601
Algebra!
Q: If XY+Z=X(Y+Z), then which of the following must be true?
1. X=0,Z=0
2. X=1,Y=1
3. Y=1,Z=0
4. X=1, Y=0
5. X=1,Z=0
OA is 5.
Very simple problem but I got confused. Please help me guys!
Cheers!
- by Ahmed MS
Sat Oct 29, 2011 5:42 pm- Forum: Problem Solving
- Topic: Algebra!
- Replies: 2
- Views: 868
Divisibility and Primes!
Q: When 15 is divided by Y, the remainder is Y - 3. If Y must be an integer, what are all the possible values of Y?
Can anyone please explain how to solve this problem?
Cheers!
- by Ahmed MS
Thu Oct 27, 2011 9:59 am- Forum: Problem Solving
- Topic: Divisibility and Primes!
- Replies: 4
- Views: 1230