BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

n and p are even

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
User avatar
GMAT Instructor
Posts: 3650
Joined: Wed Jan 21, 2009 4:27 am
Location: India
Thanked: 267 times
Followed by:80 members
GMAT Score:760

n and p are even

by sanju09 » Sat Jun 19, 2010 3:06 am
n is an integer chosen at random from the set {2, 5, 6} and p another integer chosen at random from the set {6, 9, 10}. What is the probability that the two numbers n and p are even?
(A) 1/9
(B) 2/9
(C) 4/9
(D) 5/9
(E) 7/9
The mind is everything. What you think you become. -Lord Buddha



Sanjeev K Saxena
Quantitative Instructor
The Princeton Review - Manya Abroad
Lucknow-226001

www.manyagroup.com
Top
Source: — Problem Solving |
User avatar
Master | Next Rank: 500 Posts
Posts: 294
Joined: Wed May 05, 2010 4:01 am
Location: india
Thanked: 57 times

by amising6 » Sat Jun 19, 2010 3:10 am
sanju09 wrote:n is an integer chosen at random from the set {2, 5, 6} and p another integer chosen at random from the set {6, 9, 10}. What is the probability that the two numbers n and p are even?
(A) 1/9
(B) 2/9
(C) 4/9
(D) 5/9
(E) 7/9
prob of even number n from the set (2,5,6) and even is 2/3
prob of even number p from the set (6,9,10) and even is 2/3
so total prob 4/9
Ideation without execution is delusion
Top
User avatar
Legendary Member
Posts: 1460
Joined: Tue Dec 29, 2009 1:28 am
Thanked: 135 times
Followed by:7 members

by selango » Sat Jun 19, 2010 9:27 am
Prob=Total number of even integers from 2 sets/Total number of integers can be chosen

total number of integers chosen=3*3=9

total number of even integers are 2,6 2,10 6,6 6,10=4

prob =4/9
Top
Post new topic Post Reply
• Page 1 of 1