Friday, May 22, 2009
22nd May Gre Quants Question
got 1200........quants-800 verbal-400
juz keep visiting this site for quants guyz..........swear to god that about 5-6 sums came previous threads....
thanks to all the members of gre daily update blog......u guyz really helped....
1. r < s < t, x < y
when arranged in increasing order, which of these 5 numbers cannot be 2nd
ans: t
2. 1 container can contain maximum 3 cubic feet of milk. How many cubic yards of milk can be contained in 100 containers.
3. There are 2 parallel lines goven p and q. There is another line L given such that line lcuts line p at the point A and line q at point C. Another line m intersects line L at point A and further cuts line q at point B
Col A: AB
Col B: AC
Ans: D
4. An item can be made by selecting a combination of 2 subitems. The first sub item can be selected in 3 out of 5 ways. The seond sub item can be selected in 4 out of 5 ways. What are the maximum number of combinations availible.
Ans :25
5.
Col A: 100! / 99!
Col B: (100! - 99!)/ 98!
6. A sequence is given to you. 1,-3,5,-7........
The nth number is represented by {(-1)^(n+1)}*(2n-1)
What is the sum of the first 25 numbers.
7. There was another sum where they had given us 5 different lines as the options, and asked us which line has the greatest slope.
Ans: -(y co-eff)/(x-coeff)
8. Given Set A = {5,6,7,8,9} &
Set B = {26,27,28,29,30}
If one element is choosen from A say 'X' and one from B say 'Y' then how many different values of x+y are possible?
Ans: 9
9. Given a line in xy plane with slope k = -1/2
Col A: x-intercept
Col B: y-intercept
Ans: B
10. OK, there was a diagram here......gunna try n explain As well as possible. Its a co-ordinate geometry sum.
Imagine the x and y axis. Theres a line drawn such that it cuts the y-axis at B(0,b) and the x-axis at A(a,0). Now there is another line drawn parallel to the x-axis such that its distance from point B is K. It cuts the line AB at point (x,y). You have to find the value of x and y in terms of a,b,k.
Ans: x=ak/b, y=b-k.
This is all i can remember.....there were 2 graphs as usual........think of anythin else.............will post it later.
All d best Guyz[/img][/quote]
Friday, May 22, 2009
22nd May Gre Quants Question
got 1200........quants-800 verbal-400
juz keep visiting this site for quants guyz..........swear to god that about 5-6 sums came previous threads....
thanks to all the members of gre daily update blog......u guyz really helped....
1. r < s < t, x < y
when arranged in increasing order, which of these 5 numbers cannot be 2nd
ans: t
2. 1 container can contain maximum 3 cubic feet of milk. How many cubic yards of milk can be contained in 100 containers.
3. There are 2 parallel lines goven p and q. There is another line L given such that line lcuts line p at the point A and line q at point C. Another line m intersects line L at point A and further cuts line q at point B
Col A: AB
Col B: AC
Ans: D
4. An item can be made by selecting a combination of 2 subitems. The first sub item can be selected in 3 out of 5 ways. The seond sub item can be selected in 4 out of 5 ways. What are the maximum number of combinations availible.
Ans :25
5.
Col A: 100! / 99!
Col B: (100! - 99!)/ 98!
6. A sequence is given to you. 1,-3,5,-7........
The nth number is represented by {(-1)^(n+1)}*(2n-1)
What is the sum of the first 25 numbers.
7. There was another sum where they had given us 5 different lines as the options, and asked us which line has the greatest slope.
Ans: -(y co-eff)/(x-coeff)
8. Given Set A = {5,6,7,8,9} &
Set B = {26,27,28,29,30}
If one element is choosen from A say 'X' and one from B say 'Y' then how many different values of x+y are possible?
Ans: 9
9. Given a line in xy plane with slope k = -1/2
Col A: x-intercept
Col B: y-intercept
Ans: B
10. OK, there was a diagram here......gunna try n explain As well as possible. Its a co-ordinate geometry sum.
Imagine the x and y axis. Theres a line drawn such that it cuts the y-axis at B(0,b) and the x-axis at A(a,0). Now there is another line drawn parallel to the x-axis such that its distance from point B is K. It cuts the line AB at point (x,y). You have to find the value of x and y in terms of a,b,k.
Ans: x=ak/b, y=b-k.
This is all i can remember.....there were 2 graphs as usual........think of anythin else.............will post it later.
All d best Guyz[/img][/quote]
6 comments:
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gre guru said...
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2. 1 container can contain maximum 3 cubic feet of milk. How many cubic yards of milk can be contained in 100 containers.
100/3 ???
5.
Col A: 100! / 99!
Col B: (100! - 99!)/ 98!
99^2
6. A sequence is given to you. 1,-3,5,-7........
The nth number is represented by {(-1)^(n+1)}*(2n-1)
What is the sum of the first 25 numbers.
N=25 === [(-1)^(25+1)]x[2*25-1]=(1)*49=49
N=24=== -47
N=23 == 45
……….
We will have some like this:
1,-3,5,-7……45,-47,49.
49,-47,45…..5,-3,1 (Reverse and add)
==============
50,-50,50…. 50,-50,50
Since we have n=25, (12+1+12), and since the first and last are +, the middle one ,13th , should be 50. The rest cancel out. All we have to do now is to divide 50 by 2 (remember we reversed and added the same thing). In fact, if n=13 then {(-1)^(n+1)}*(2n-1) ={(-1)^(13+1)}*(2x13-1)=(1)*(26-1)=25
Answer: 25
9. Given a line in xy plane with slope k = -1/2
Col A: x-intercept
Col B: y-intercept
Ans: B -
May 27, 2009 at 9:17 PM
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Anonymous said...
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How to do 4th one in 22nd may Quant section ? is it just a simple permutaion combination ?
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June 9, 2009 at 1:21 PM
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Anonymous said...
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One cubic yard is 27 cubic feet . so for 100 container , 300 cubic feet is required. hence for 27 cubic feet = 1 cubis yard , how much for 300 cubic feet
300/27
around 11 -
June 9, 2009 at 1:25 PM
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Anonymous said...
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how is the answer B in the problem with slope -1/2 ??? please tell me
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June 9, 2009 at 1:41 PM
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Anonymous said...
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slope m=-a/b always..so -a= -1,b=2 as given then a intercept is 1 and b intercept is 2 ...so B>A option 2
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June 9, 2009 at 10:18 PM
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Anonymous said...
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Thanks , But isnt it , - term is common for the whole term , what if X= -1 and y = -2 , in this case X is greater and still slope will be ,
(-)*(-1)/(-2)
slope will be -1/2 , right ?
so amswer should be D i guess -
June 10, 2009 at 6:38 AM
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6 comments:
2. 1 container can contain maximum 3 cubic feet of milk. How many cubic yards of milk can be contained in 100 containers.
100/3 ???
5.
Col A: 100! / 99!
Col B: (100! - 99!)/ 98!
99^2
6. A sequence is given to you. 1,-3,5,-7........
The nth number is represented by {(-1)^(n+1)}*(2n-1)
What is the sum of the first 25 numbers.
N=25 === [(-1)^(25+1)]x[2*25-1]=(1)*49=49
N=24=== -47
N=23 == 45
……….
We will have some like this:
1,-3,5,-7……45,-47,49.
49,-47,45…..5,-3,1 (Reverse and add)
==============
50,-50,50…. 50,-50,50
Since we have n=25, (12+1+12), and since the first and last are +, the middle one ,13th , should be 50. The rest cancel out. All we have to do now is to divide 50 by 2 (remember we reversed and added the same thing). In fact, if n=13 then {(-1)^(n+1)}*(2n-1) ={(-1)^(13+1)}*(2x13-1)=(1)*(26-1)=25
Answer: 25
9. Given a line in xy plane with slope k = -1/2
Col A: x-intercept
Col B: y-intercept
Ans: B
How to do 4th one in 22nd may Quant section ? is it just a simple permutaion combination ?
One cubic yard is 27 cubic feet . so for 100 container , 300 cubic feet is required. hence for 27 cubic feet = 1 cubis yard , how much for 300 cubic feet
300/27
around 11
how is the answer B in the problem with slope -1/2 ??? please tell me
slope m=-a/b always..so -a= -1,b=2 as given then a intercept is 1 and b intercept is 2 ...so B>A option 2
Thanks , But isnt it , - term is common for the whole term , what if X= -1 and y = -2 , in this case X is greater and still slope will be ,
(-)*(-1)/(-2)
slope will be -1/2 , right ?
so amswer should be D i guess
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