Search found 13 matches
might go like this
which of the following distribution of numbers has the greatest standard deviation?
A. {-3, 1, 2} mean =0
B. {-2, -1, 1, 2} mean=0
C. {3, 5, 7}mean=5
D. {-1, 2, 3, 4}mean=4
E. {0, 2, 4} mean=2
Answer should be D.
- by jaganbravo
Fri May 16, 2008 10:25 am- Forum: Problem Solving
- Topic: Standard Deviation
- Replies: 9
- Views: 11162
- by jaganbravo
Fri May 16, 2008 3:39 am- Forum: Problem Solving
- Topic: gmat prep 1 - PS - F(X)
- Replies: 1
- Views: 1191
- by jaganbravo
Fri May 16, 2008 3:38 am- Forum: Problem Solving
- Topic: GMAT PREP 1 - PS - Gallon problem
- Replies: 1
- Views: 1352
- by jaganbravo
Fri May 16, 2008 3:34 am- Forum: Data Sufficiency
- Topic: GMAT PREP 1 - DS - Prime number
- Replies: 1
- Views: 1480
- by jaganbravo
Fri May 16, 2008 3:33 am- Forum: Data Sufficiency
- Topic: number line
- Replies: 5
- Views: 1640
- by jaganbravo
Fri May 16, 2008 3:22 am- Forum: Data Sufficiency
- Topic: Planes and line
- Replies: 1
- Views: 1313
- by jaganbravo
Fri May 16, 2008 3:20 am- Forum: Data Sufficiency
- Topic: GMAT PREP 1 - DS
- Replies: 2
- Views: 1656
- by jaganbravo
Fri May 16, 2008 12:02 am- Forum: Data Sufficiency
- Topic: GMAT PREP 1 - DS
- Replies: 2
- Views: 1656
Triangle rule
In a triangle sum of two side greater than 3 rd side,
Here we have 5,2
sum(5+2) = 7
3rd side <7> 5
3 can come as 2+3 = 5 isosceles
perimeter can 5+2+4=11 or 5+5+2=12
so answer is none.
- by jaganbravo
Thu May 15, 2008 11:14 pm- Forum: Problem Solving
- Topic: GMAT PREP 1 - Perimeter question
- Replies: 2
- Views: 1427
Answer
Given F = 120(2 ^ -at) + 60
use already given value to find a,
F=120 , t =10
120=120(2^ -a(10) )+60
60=120(2 ^ -10a)
solving we get a = 1/10
substitute for new value, F =75
- by jaganbravo
Thu May 15, 2008 11:07 pm- Forum: Problem Solving
- Topic: GMAT Prep2?? (Farenheit)
- Replies: 3
- Views: 1832
- by jaganbravo
Thu May 15, 2008 10:42 pm- Forum: Problem Solving
- Topic: GMAT PREP 1 - Perimeter question
- Replies: 2
- Views: 1427
- by jaganbravo
Thu May 15, 2008 9:21 pm- Forum: Problem Solving
- Topic: Gmat Prep 1
- Replies: 3
- Views: 1366
Explaination in short
For all positive integers m, [m] = 3m when m is odd and [m]=1/2m when m is even.Which of the following is equivalent to [9] x [6]
[9] is odd = 3x9 = 27
[6] is even = 1/2 x 6 = 3
[9] x [6] = 27 x 3
Above can be written as 3 x 27 = [27] is odd
Answer is D.
- by jaganbravo
Fri Apr 25, 2008 11:49 am- Forum: Problem Solving
- Topic: GMAT PROB....
- Replies: 3
- Views: 2702