GRE Prep Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
When two fair dice are rolled, what is the probability that at least o
[#permalink]
16 Jan 2023, 02:34
16 Jan 2023, 02:34
Expert Reply
00:00
Question Stats:
42% (00:58) correct
57% (00:48) wrong based on 14 sessions
Hide Show timer Statistics
When two fair dice are rolled, what is the probability that at least one of the numbers will be even?
A. 1/4
B. 1/3
C. 1/2
D. 2/3
E. 3/4
A. 1/4
B. 1/3
C. 1/2
D. 2/3
E. 3/4
Re: When two fair dice are rolled, what is the probability that at least o
[#permalink]
18 Jan 2023, 05:00
18 Jan 2023, 05:00
1
Expert Reply
1
Bookmarks
OE
Problems of this type (characterized by wording such as "at least”) are often most easily solved using the “1 - x ” shortcut. It is easier to solve for the probability of the event not happening, because it is easily defined: both numbers come up odd.
The probability of each number coming up odd is 3/6 Since the two dice are independent, the probability of both coming up odd is 1/2 * 1/2 which equals 1/4 so the probability of getting at least one even number is 1-1/4 or 3/4
Problems of this type (characterized by wording such as "at least”) are often most easily solved using the “1 - x ” shortcut. It is easier to solve for the probability of the event not happening, because it is easily defined: both numbers come up odd.
The probability of each number coming up odd is 3/6 Since the two dice are independent, the probability of both coming up odd is 1/2 * 1/2 which equals 1/4 so the probability of getting at least one even number is 1-1/4 or 3/4
gmatclubot
Re: When two fair dice are rolled, what is the probability that at least o [#permalink]
18 Jan 2023, 05:00
Moderators:
