Search found 7 matches
"If 20 % of the applicants who applied college X and 25% of the applicants who applied college Y applied both college X and Y"
I personally found the "and" of the statement confusing => 0.2A + 0.25B = 15
- by telberrak
Fri May 16, 2014 8:25 am- Forum: Problem Solving
- Topic: Of the applicants passes a certain test, 15
- Replies: 16
- Views: 9825
Event A : pro Aam-Aadmi
Event B : pro Aam-Aurat
pick up a pro Aam-Aadmi knowing he's a pro Aam-Aurat is P(A|B)
Probability of A knowing B (non-independent events) is P(A|B) = P(A and B)/P(B)
P(A and B) = 20%
P(B) = 30%
==> P(A|B) = 20%/30% = 2/3
- by telberrak
Fri May 16, 2014 1:27 am- Forum: Problem Solving
- Topic: The Aam-Aadmi Party
- Replies: 9
- Views: 6474
Let X be the number of players Left Handed players = X/2 Right Handed players = X/2 Absent players = 2X/3 Present players = X/3 (1/3 are left handed) Present left handed players = 1/3 * X/3 = X/9 Absent left handed players = X/2 - X/9 = 7X/18 Present Right handed players = X/3 -X/9 = 2X/9 (present p...
- by telberrak
Thu May 15, 2014 9:51 am- Forum: Problem Solving
- Topic: Ratio of players
- Replies: 6
- Views: 2076
Waht about this solution NB : A WORD THAT CONTAIN 2 REPEATED LETTERS IS STILL A SINLE WORD and also, the maximum words of 5 letters you can make from 10 letters in 10 power 5 = 100000 10power(5) = 100000 is the number all the possible words of five letters formed from the 10 letters (every letter ca...
- by telberrak
Fri Apr 22, 2011 11:07 am- Forum: Problem Solving
- Topic: Permutation and combination Help!!!
- Replies: 2
- Views: 1459
we can choose 9C3 = 84 combinations of 3 points (A,B,C) from the 9 points.
the number of combination of (A,B,C) that are on the same line are 8 (3 horizontals, 3 verticals, 2 diagonals)
the answer is 84 - 8 = 76 triangles
- by telberrak
Wed Apr 20, 2011 3:13 am- Forum: Problem Solving
- Topic: How many triangles on the coordinate plane
- Replies: 131
- Views: 79938
- by telberrak
Tue Apr 19, 2011 11:23 pm- Forum: Data Sufficiency
- Topic: ratio set
- Replies: 6
- Views: 1681
Hi,
What if the first statement says :
1) In 2003, Acme sold computers and printers in a ratio of 3:2
Kind Regards
- by telberrak
Tue Apr 19, 2011 11:48 am- Forum: Data Sufficiency
- Topic: ratio set
- Replies: 6
- Views: 1681