Search found 21 matches

Probability Problem

How to solve this problem quickly? I need more than 5 mins to get the answer. A long calculation.... :-( Source: MGMAT Bill and Jane play a simple game involving two fair dice, each of which has six sides numbered from 1 to 6 (with an equal chance of landing on any side). Bill rolls the dice and his...

by yuliawati

Wed Oct 27, 2010 10:26 pm
Forum: Problem Solving
Topic: Probability Problem
Replies: 6
Views: 3260

I usually solve the statistical problem by picking number.*this approach does work for me. For this case, let we jot down the premises. 1. In 1984, network television commercials accounted for 80% of all network and non-network television advertising revenue. 2. In 2004, that figure was 60%. 3. Oper...

by yuliawati

Thu Oct 14, 2010 2:08 am
Forum: Critical Reasoning
Topic: MGMAT CR Ed 4 - Chap.5 Problem#6: Network Television
Replies: 7
Views: 1543

I think the answer is D. 1. We need to calculate the total revenue (R). R= (Price of newspaper A*Number of sold of Newspaper A)+(Price of newspaper B*Number of sold of Newspaper B) = (1*P) + (1.25* (100-p)) -----> note: if p% of the newspapers that the store sold were copies of newspaper A, then (10...

by yuliawati

Thu Oct 07, 2010 1:46 am
Forum: Problem Solving
Topic: 700+ problem
Replies: 5
Views: 1148

You can solve this problem by calculating the total numbers of committe that includes married couple. Lets say the committee is AAC (AA represents a couple, and C represents the third person in the committe). 1. Total numbers of ways to select the committee = 10C3 (5 couples = 10 person) = 120. 2. T...

by yuliawati

Wed Oct 06, 2010 11:48 pm
Forum: Problem Solving
Topic: Probability
Replies: 7
Views: 1123

What is the source? IMO: C Question: Area X > Area Y? or radius x > radius y? 1. The circumference of X>Z and the circumference of Z<Y. means 2*pi*rx > 2*pi*rz, 2*pi*rz < 2*pi*ry --> No information about the relationship between rx and ry. So, Not sufficient. 2. The difference between the longest ch...

by yuliawati

Wed Oct 06, 2010 3:31 am
Forum: Data Sufficiency
Topic: DS
Replies: 2
Views: 951

Click and Tick

In the game Cako, a player is awarded one tick for every third Alb captured, and one click for every fourth Berk captured. The total score is equal to the product of clicks and ticks. If a player has a score of 77, how many Albs did he capture? (1) The difference between Albs captured and Berks capt...

by yuliawati

Wed Oct 06, 2010 1:46 am
Forum: Data Sufficiency
Topic: Click and Tick
Replies: 3
Views: 1557