Search found 152 matches
I am not sure how to do this mathematically. It seems as if that would take quite a formula. So I just wrote them out. Since the women are of eight different heights, I just called them 1, 2, 3, 4, 5, 6, 7, and 8. 5678 4678 4578 4568 3678 3578 3568 3478 3468 2678 2578 2568 2478 2468 1234 1235 1236 ...
- by akash singhal
Fri Nov 13, 2015 1:08 am- Forum: Problem Solving
- Topic: Combinations
- Replies: 6
- Views: 1491
Combinations
Eight women of eight different heights are to pose for a photo in two rows of four. Each woman in the second row must stand directly behind a shorter woman in the first row. In addition, all of the women in each row must be arranged in order of increasing height from left to right. Assuming that th...
- by akash singhal
Thu Nov 12, 2015 9:31 pm- Forum: Problem Solving
- Topic: Combinations
- Replies: 6
- Views: 1491
Permutation and Combinations
You have a six-sided cube and six cans of paint, each a different color. You may not mix colors of paint. How many distinct ways can you paint the cube using a different color for each side? (If you can reorient a cube to look like another cube, then the two cubes are not distinct.) (A) 24 (B) 30 (...
- by akash singhal
Thu Nov 12, 2015 9:18 pm- Forum: Problem Solving
- Topic: Permutation and Combinations
- Replies: 2
- Views: 1409
Probablity
Tanya prepared four different letters to be sent to four different addresses. For each letter, she prepared an envelope with its correct address. If the 4 letters are to be put into the envelopes at random, what is the probability that only one letter will be put into the envelope with its correct ...
- by akash singhal
Thu Nov 12, 2015 9:14 pm- Forum: Problem Solving
- Topic: Probablity
- Replies: 6
- Views: 1451
Combinations
Six mobsters have arrived at the theater for the premiere of the film “Goodbuddies.� One of the mobsters, Frankie, is an informer, and he's afraid that another member of his crew, Joey, is on to him. Frankie, wanting to keep Joey in his sights, insists upon standing behind Joey in line at the c...
- by akash singhal
Thu Nov 12, 2015 9:12 pm- Forum: Problem Solving
- Topic: Combinations
- Replies: 12
- Views: 3929
Unlike juvenile diabetes, which is a genetic condition present from birth, type-2 diabetes is acquired in adulthood, generally as a result of obesity and inactivity. The number of cases of type-2 diabetes has been steadily increasing in the United States since 1970, indicating to many researchers t...
- by akash singhal
Thu Nov 12, 2015 7:27 am- Forum: Critical Reasoning
- Topic: Weaken
- Replies: 2
- Views: 1055
A retail company needs to set up 5 additional distribution centers that can be located in three cities on the east coast (Boston, New York, and Washington D.C.), one city in the mid-west (Chicago), and three cities on the west coast (Seattle, San Francisco and Los Angeles). If the company must have...
- by akash singhal
Thu Nov 12, 2015 3:50 am- Forum: Problem Solving
- Topic: permutation nd combinations
- Replies: 4
- Views: 1229
permutation nd combinations
A retail company needs to set up 5 additional distribution centers that can be located in three cities on the east coast (Boston, New York, and Washington D.C.), one city in the mid-west (Chicago), and three cities on the west coast (Seattle, San Francisco and Los Angeles). If the company must have ...
- by akash singhal
Thu Nov 12, 2015 3:25 am- Forum: Problem Solving
- Topic: permutation nd combinations
- Replies: 2
- Views: 1043
permutation nd combinations
A retail company needs to set up 5 additional distribution centers that can be located in three cities on the east coast (Boston, New York, and Washington D.C.), one city in the mid-west (Chicago), and three cities on the west coast (Seattle, San Francisco and Los Angeles). If the company must have ...
- by akash singhal
Thu Nov 12, 2015 3:24 am- Forum: Problem Solving
- Topic: permutation nd combinations
- Replies: 4
- Views: 1229
Permutation and Combinations
At a certain laboratory, chemical substances are identified by an unordered combination of 3 colors. If no chemical may be assigned the same colors, what is the maximum number of substances that can be identified using 7 colors? ans 7C3 How to find whether we have to use purmutation or combination i...
- by akash singhal
Thu Nov 12, 2015 2:55 am- Forum: Problem Solving
- Topic: Permutation and Combinations
- Replies: 1
- Views: 850
Weaken
Unlike juvenile diabetes, which is a genetic condition present from birth, type-2 diabetes is acquired in adulthood, generally as a result of obesity and inactivity. The number of cases of type-2 diabetes has been steadily increasing in the United States since 1970, indicating to many researchers t...
- by akash singhal
Wed Nov 11, 2015 9:14 pm- Forum: Critical Reasoning
- Topic: Weaken
- Replies: 2
- Views: 1055
Total number of integers from which one could be selected (0, 1, 2, 3, 4, 5, 6, 7, 8, 9), is 10. Current median, (7 - 3)/2 = 5. Current range, 8 - 2 = 6 So to increase the median while leaving the range the same we need an integer greater than 5 but not greater than 8. The ones that work are 6, 7 a...
- by akash singhal
Sat Nov 07, 2015 10:25 pm- Forum: Problem Solving
- Topic: Range
- Replies: 4
- Views: 1214
Ranges
S is a set of positive integers. The average of the terms in S is equal to the range of the terms in S. What is the sum of all the integers in S? (1) The range of S is a prime number that is less than 11 and is not a factor of 10. (2) S is composed of 5 different integers. OE E Good question!! Have ...
- by akash singhal
Sat Nov 07, 2015 10:21 pm- Forum: Data Sufficiency
- Topic: Ranges
- Replies: 4
- Views: 1870
Range
If a randomly selected non-negative single digit integer is added to set X {2, 3, 7, 8}, what is the probability that the median of the set will increase while its range will remain the same? (A) 20% (B) 30% (C) 40% (D) 50% (E) 60% OE B Well My answer is 33.3%. Is the question asking approximate in...
- by akash singhal
Sat Nov 07, 2015 9:56 pm- Forum: Problem Solving
- Topic: Range
- Replies: 4
- Views: 1214
NUMBERS
x and y are positive integers such that x=8y+12, what is the greatest common divisor of x and y?
1). X=12u, where u is an integer. 2). Y=12z, where z is an integer.
OE B
Explain
- by akash singhal
Sat Nov 07, 2015 4:01 am- Forum: Data Sufficiency
- Topic: NUMBERS
- Replies: 6
- Views: 2222