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

 It is currently 23 Apr 2019, 15:37

### 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

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 basketball player makes 30% of his three point shots during a season

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS:

### Hide Tags

Manager
Status: Gathering chakra
Joined: 05 Feb 2018
Posts: 188
A basketball player makes 30% of his three point shots during a season  [#permalink]

### Show Tags

27 Mar 2019, 14:36
00:00

Difficulty:

75% (hard)

Question Stats:

25% (02:03) correct 75% (01:43) wrong based on 16 sessions

### HideShow timer Statistics

A basketball player makes 30% of his three point shots during a season. If in a given game he attempts 4 three point shots, what is approximately the probability he makes at least one shot?

A) 24%
B) 30%
C) 76%
D) 83%
E) 99%
Manhattan Prep Instructor
Joined: 04 Dec 2015
Posts: 729
GMAT 1: 790 Q51 V49
GRE 1: Q170 V170
Re: A basketball player makes 30% of his three point shots during a season  [#permalink]

### Show Tags

27 Mar 2019, 18:23
energetics wrote:
A basketball player makes 30% of his three point shots during a season. If in a given game he attempts 4 three point shots, what is approximately the probability he makes at least one shot?

A) 24%
B) 30%
C) 76%
D) 83%
E) 99%

The 'at least one shot' language should make you think about subtracting probabilities. Making 'at least one shot' is the opposite of making NO shots at all. So, this is true:

probability(at least one shot) = 1 - probability(no shots)

And the probability of making no shots is relatively simple to calculate. The probability of failing to make any given shot is 70%, so the probability of failing to make all four shots is (.70)(.70)(.70)(.70).

We don't need a very precise answer, so let's approximate:

(.70)(.70)(.70)(.70)
(.49)(.49)
(.5)(.5)
.25

1-.25 = .75

The right answer is approximately .75, or 75%. So, the right answer is (C) 76%.
_________________

Chelsey Cooley | Manhattan Prep | Seattle and Online

My latest GMAT blog posts | Suggestions for blog articles are always welcome!
Re: A basketball player makes 30% of his three point shots during a season   [#permalink] 27 Mar 2019, 18:23
Display posts from previous: Sort by

# A basketball player makes 30% of his three point shots during a season

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics

 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®.