GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 16 Aug 2018, 01:10

### GMAT 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

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# A coin that is tossed will land heads or tails, and each

 post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
Manager
Joined: 10 Oct 2008
Posts: 56
A coin that is tossed will land heads or tails, and each  [#permalink]

### Show Tags

14 Nov 2008, 10:12
A coin that is tossed will land heads or tails, and each outcome has equal probability. What is the probability that the coin will land heads at least once on two tosses?

A. 1/4
B. 1/3
C. 1/2
D. 2/3
E. 3/4

--== Message from GMAT Club Team ==--

This is not a quality discussion. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.
Manager
Joined: 21 Oct 2008
Posts: 131
Schools: Rady School of Management at UC San Diego GO TRITONS
Re: coin---26  [#permalink]

### Show Tags

14 Nov 2008, 12:20
E.

There are only four possible outcomes: T-T, T-H, H-T, H-H. Three of these four involve at least one head.
VP
Joined: 05 Jul 2008
Posts: 1329
Re: coin---26  [#permalink]

### Show Tags

15 Nov 2008, 13:12
Another E 3/4

P of getting both T's is (1/2) ^ 2 = 1/4 Not getting both T's is same as atleast one H. 1-(1/4) = 3/4

--== Message from GMAT Club Team ==--

This is not a quality discussion. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.
Re: coin---26 &nbs [#permalink] 15 Nov 2008, 13:12
Display posts from previous: Sort by

# A coin that is tossed will land heads or tails, and each

 post reply Question banks Downloads My Bookmarks Reviews Important topics

Moderator: chetan2u

# Events & Promotions

 Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.