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

 It is currently 20 Apr 2019, 01:33

### 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

# M04-28

Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 54375

### Show Tags

16 Sep 2014, 00:23
00:00

Difficulty:

5% (low)

Question Stats:

93% (00:30) correct 7% (00:42) wrong based on 159 sessions

### HideShow timer Statistics

10 applicants are interviewed for a position. Among them are Paul and Jen. If a randomly chosen applicant is invited to interview first, what is the probability to have neither Paul nor Jen at the first interview?

A. $$\frac{1}{10}$$
B. $$\frac{1}{9}$$
C. $$\frac{1}{2}$$
D. $$\frac{4}{5}$$
E. $$\frac{9}{10}$$

_________________
Math Expert
Joined: 02 Sep 2009
Posts: 54375

### Show Tags

16 Sep 2014, 00:23
Official Solution:

10 applicants are interviewed for a position. Among them are Paul and Jen. If a randomly chosen applicant is invited to interview first, what is the probability to have neither Paul nor Jen at the first interview?

A. $$\frac{1}{10}$$
B. $$\frac{1}{9}$$
C. $$\frac{1}{2}$$
D. $$\frac{4}{5}$$
E. $$\frac{9}{10}$$

Probability of inviting Paul or Jen first is $$0.1+0.1=0.2$$; probability of inviting neither first is $$1- 0.2 = 0.8=\frac{4}{5}$$

_________________
Intern
Joined: 10 May 2017
Posts: 27

### Show Tags

30 Jun 2017, 23:29
"OR" type problem again.

Selecting Paul for interview = 1/10
Selecting Jena for interview = 1/10

"OR" means addition, so , (1/10) + (1/10) = 2/10

Not getting selected is 1-(2/10)= 8/10 or 4/5
Manager
Joined: 12 Jun 2016
Posts: 214
Location: India
WE: Sales (Telecommunications)

### Show Tags

07 Sep 2017, 03:09
Hello!

I have a question in this. Is there a possibility of GMAT testing this trap - I mean, not giving choices in their reduced form? Here the answer is 4/5 but choice is 8/10 (Which of course is one and the same). Though I got this right, It took me time to realize that the right answer choice is not in reduced form.

I read in some prep book that GMAT always gives answer choices in the reduced form. So, curious to know about this. Do not want to fall for this again

Thanks!
_________________
My Best is yet to come!
Math Expert
Joined: 02 Sep 2009
Posts: 54375

### Show Tags

07 Sep 2017, 03:13
susheelh wrote:
Hello!

I have a question in this. Is there a possibility of GMAT testing this trap - I mean, not giving choices in their reduced form? Here the answer is 4/5 but choice is 8/10 (Which of course is one and the same). Though I got this right, It took me time to realize that the right answer choice is not in reduced form.

I read in some prep book that GMAT always gives answer choices in the reduced form. So, curious to know about this. Do not want to fall for this again

Thanks!

I would not call this a trap but yes, the options will be in reduced form. Edited.
_________________
Re: M04-28   [#permalink] 07 Sep 2017, 03:13
Display posts from previous: Sort by

# M04-28

Moderators: chetan2u, Bunuel

 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®.