Search found 32 matches
- by acorra
Sat Apr 25, 2009 2:17 pm- Forum: Problem Solving
- Topic: raffle: probability
- Replies: 4
- Views: 5648
raffle: probability
An a small raffle, there are only 2 prizes, and 30 tickets sold. A boy has 3 tickets in the raggle. Find the probability that he wins:
a) the first prize
b) both prizes
c) only the 2nd prie
d) a prize
Please detail your explanation/solution, I need to solve this kind of problem
thanks
Andrew
- by acorra
Sat Apr 25, 2009 5:53 am- Forum: Problem Solving
- Topic: raffle: probability
- Replies: 4
- Views: 5648
bag of baloon: probability!!!
In a bag of baloons, the ratio of red baloons to other colours is 1:5, if 3 baloons are selected from the bag at random, what is the probability that:
a) at least one baloon is red
b) exactly one baloon is red
OA will follow soon
- by acorra
Sat Apr 25, 2009 5:52 am- Forum: Problem Solving
- Topic: bag of baloon: probability!!!
- Replies: 1
- Views: 1092
- by acorra
Fri Mar 27, 2009 3:01 pm- Forum: Sentence Correction
- Topic: Education Act
- Replies: 4
- Views: 1568
in D, than those is not clear what it is referring to.
more fuel efficient small cars? or small cars?
cheers
Andrew
- by acorra
Fri Mar 27, 2009 2:58 pm- Forum: Sentence Correction
- Topic: small cars
- Replies: 2
- Views: 1281
- by acorra
Fri Mar 27, 2009 2:33 pm- Forum: Sentence Correction
- Topic: Distribution of land mass
- Replies: 13
- Views: 5159
- by acorra
Sun Nov 09, 2008 10:24 am- Forum: Data Sufficiency
- Topic: Building
- Replies: 8
- Views: 1939
- by acorra
Sun Nov 09, 2008 10:23 am- Forum: Data Sufficiency
- Topic: Sequence
- Replies: 4
- Views: 1833
- by acorra
Sun Nov 09, 2008 10:22 am- Forum: Data Sufficiency
- Topic: p+q
- Replies: 8
- Views: 1869
- by acorra
Sun Nov 09, 2008 10:01 am- Forum: Data Sufficiency
- Topic: p+q
- Replies: 8
- Views: 1869
Sequence
Sequence S consists of 24 nonzero integers. If each term in S after the second is the product of the previous two terms, how many terms in S are negative?
1) The third term in S is positive
2) The fourth term in S is negative
Please explain in details,
thanks
Andrew
- by acorra
Sun Nov 09, 2008 10:00 am- Forum: Data Sufficiency
- Topic: Sequence
- Replies: 4
- Views: 1833
Building
Alan and Betty live in a multi-story apartment building. How many stories does the building have?
1) There are 3 stories between those on which Alan and Betty live
2) There are 9 stories above Alan's floor and 9 stories below Betty's floor
Many thanks
Andrew
- by acorra
Sun Nov 09, 2008 9:57 am- Forum: Data Sufficiency
- Topic: Building
- Replies: 8
- Views: 1939
Jurors
twelve jurors must be picked from a pool of [i]n[/i] potential jurors. If [i]m[/i] of the potential jurors are rejected by the defense counsel and the prosecuting attorney, how many different possibile juries could be picked from the remaining potential jurors? 1) if one less potential juror had bee...
- by acorra
Sun Nov 09, 2008 9:55 am- Forum: Data Sufficiency
- Topic: Jurors
- Replies: 2
- Views: 1702
- by acorra
Sun Oct 26, 2008 2:45 pm- Forum: Problem Solving
- Topic: Square countertop
- Replies: 12
- Views: 10530
trucks
One week a certain truck rental lot had a total of 20 trucks, all of which on the lot Monday morning. If 50 percent of the trucks that were rented out during the week were returned to the lot on or before Saturday morning of that week, and if there were at least 12 trucks on the lot that Saturday mo...
- by acorra
Sat Oct 25, 2008 7:31 am- Forum: Problem Solving
- Topic: trucks
- Replies: 3
- Views: 1393