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ps:probability
A set P = {1, 2, 3, 4, 5} and set Q = {1, 2, 3, 4, 5, 6, 7} is defined with given numbers. Now one number is chosen randomly from each of the given set in such a way that the absolute difference between the two numbers is 2. What is the probability that one of the number chosen is 3 ?
- by arjunshn
Tue Apr 19, 2011 12:12 am- Forum: Problem Solving
- Topic: ps:probability
- Replies: 1
- Views: 1524
ds:numbers
X is a multiple of 5.what is the value of X?
(1) 1237 < X < 1242.5
(2) 3711 < 3X < 3727.5
- by arjunshn
Tue Apr 19, 2011 12:07 am- Forum: Data Sufficiency
- Topic: ds:numbers
- Replies: 3
- Views: 1757
Its a great way to solve it faster..basically a shortcut or basic logic.
thanx alot for sharing it..
thank you
- by arjunshn
Sat Apr 16, 2011 7:27 am- Forum: Data Sufficiency
- Topic: ds:is x^2>5^2?
- Replies: 13
- Views: 3907
- by arjunshn
Sat Apr 16, 2011 7:06 am- Forum: Data Sufficiency
- Topic: ds:numbers
- Replies: 7
- Views: 1414
- by arjunshn
Sat Apr 16, 2011 4:23 am- Forum: Data Sufficiency
- Topic: ds:inequality
- Replies: 4
- Views: 850
- by arjunshn
Sat Apr 16, 2011 4:19 am- Forum: Data Sufficiency
- Topic: ds:numbers
- Replies: 7
- Views: 1414
But in 1st case we also get k<1 and k>3..thus it can be any number in this range..so isnt it wrong jus chosing k>1 and k<3?
- by arjunshn
Sat Apr 16, 2011 4:08 am- Forum: Data Sufficiency
- Topic: ds:inequality
- Replies: 4
- Views: 850
ds:inequality
If k is an integer, what is the value of k?
(1) (k – 1)(k – 3) < 0
(2) (k – 5)(k – 1)(k – 3)(k – 6) < 0
- by arjunshn
Sat Apr 16, 2011 2:20 am- Forum: Data Sufficiency
- Topic: ds:inequality
- Replies: 4
- Views: 850
- by arjunshn
Fri Apr 15, 2011 10:34 am- Forum: Problem Solving
- Topic: ps:inequality
- Replies: 3
- Views: 1227
ps:inequality
if ab>cd and a,b,c and d are all greater than zero, which of the following cannot be true?
a) c>b b) d>a c) b/c>d/a d) a/c>d/b e)(cd)^2<(ab)^2
- by arjunshn
Fri Apr 15, 2011 6:02 am- Forum: Problem Solving
- Topic: ps:inequality
- Replies: 3
- Views: 1227
- by arjunshn
Wed Apr 13, 2011 6:35 am- Forum: Data Sufficiency
- Topic: ds:numbers
- Replies: 11
- Views: 1920
- by arjunshn
Wed Apr 13, 2011 6:21 am- Forum: Data Sufficiency
- Topic: ds:numbers2
- Replies: 8
- Views: 1560
- by arjunshn
Wed Apr 13, 2011 6:20 am- Forum: Data Sufficiency
- Topic: ds:numbers2
- Replies: 8
- Views: 1560
i mean the answer is B..because you pick any nine consective numbers from 350 to 400 inclusive..they have same remainders thus same sum..hence B
- by arjunshn
Wed Apr 13, 2011 6:17 am- Forum: Data Sufficiency
- Topic: ds:numbers
- Replies: 11
- Views: 1920
- by arjunshn
Wed Apr 13, 2011 6:14 am- Forum: Data Sufficiency
- Topic: ds:numbers2
- Replies: 8
- Views: 1560