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.
Jack has a cube with 6 sides numbered 1 through 6. He rolls
[#permalink]
18 Feb 2020, 16:39
18 Feb 2020, 16:39
1
Bookmarks
00:00
Question Stats:
28% (00:56) correct
71% (02:23) wrong based on 14 sessions
Hide Show timer Statistics
Jack has a cube with 6 sides numbered 1 through 6. He rolls the cube repeatedly until the first time that the sum of all of his rolls is even, at which time he stops. (Note: it is possible to roll the cube just once.) What is the probability that Jack will need to roll the cube more than 2 times in order to get an even sum?
(A) 1/8
(B) 1/4
(C) 3/8
(D) 1/2
(E) 3/4
(A) 1/8
(B) 1/4
(C) 3/8
(D) 1/2
(E) 3/4
Re: Jack has a cube with 6 sides numbered 1 through 6. He rolls
[#permalink]
22 Feb 2020, 15:33
22 Feb 2020, 15:33
Expert Reply
Post already discussed at this link https://gre.myprepclub.com/forum/jack-has- ... 11273.html
Regards
Regards
Jack has a cube with 6 sides numbered 1 through 6. He rolls
[#permalink]
22 Mar 2021, 06:49
22 Mar 2021, 06:49
solution plz....
according to me , i took 0.50*o.5*0.5=1/8 but ans is 0.5*0.5 why
according to me , i took 0.50*o.5*0.5=1/8 but ans is 0.5*0.5 why
