Join us for MBA Spotlight – The Top 20 MBA Fair      Schedule of Events | Register

 It is currently 04 Jun 2020, 11:39

### 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

# On average, a sharpshooter hits the target once every 3 shot

Author Message
TAGS:
Founder
Joined: 18 Apr 2015
Posts: 11328
Followers: 241

Kudos [?]: 2838 [1] , given: 10731

On average, a sharpshooter hits the target once every 3 shot [#permalink]  14 May 2019, 00:24
1
KUDOS
Expert's post
00:00

Question Stats:

18% (00:52) correct 81% (00:43) wrong based on 11 sessions
On average, a sharpshooter hits the target once every 3 shots. What is the probability that he will hit the target in 4 shots?

(A) $$1$$

(B) $$\frac{1}{81}$$

(C) $$\frac{1}{3}$$

(D) $$\frac{65}{81}$$

(E) $$\frac{71}{81}$$
[Reveal] Spoiler: OA

_________________

Need Practice? 20 Free GRE Quant Tests available for free with 20 Kudos
GRE Prep Club Members of the Month: Each member of the month will get three months free access of GRE Prep Club tests.

Manager
Joined: 22 Aug 2019
Posts: 72
Followers: 1

Kudos [?]: 46 [0], given: 11

Re: On average, a sharpshooter hits the target once every 3 shot [#permalink]  22 Aug 2019, 19:30
Carcass wrote:
On average, a sharpshooter hits the target once every 3 shots. What is the probability that he will hit the target in 4 shots?

(A) $$1$$

(B) $$\frac{1}{81}$$

(C) $$\frac{1}{3}$$

(D) $$\frac{65}{81}$$

(E) $$\frac{71}{81}$$

Calculate the probability he will miss all 4 shots!

(2/3)^4 = 16/81 is the chance of missing all the shots.

So 1 - 16/81 is the change that hits it at least once.
Evaluates to 65/81

Re: On average, a sharpshooter hits the target once every 3 shot   [#permalink] 22 Aug 2019, 19:30
Similar topics Replies Last post
Similar
Topics:
Arithmetic and Fractions 1 18 May 2017, 02:15
Display posts from previous: Sort by