GMAT Question of the Day: Daily via email | Daily via Instagram New to GMAT Club? Watch this Video

 It is currently 26 May 2020, 06:00

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

In a leap year, what is the probability that the number of Sunday's is

Author Message
TAGS:

Hide Tags

Intern
Joined: 28 Jan 2017
Posts: 47
In a leap year, what is the probability that the number of Sunday's is  [#permalink]

Show Tags

01 Apr 2020, 22:10
00:00

Difficulty:

25% (medium)

Question Stats:

63% (00:40) correct 38% (02:20) wrong based on 8 sessions

HideShow timer Statistics

In a leap year, what is the probability that the number of Sunday's is 53?

A) 1/7
B) 1/6
C) 2/7
D) 2/6
E) 3/7
Senior Manager
Joined: 14 Oct 2019
Posts: 404
Location: India
GPA: 4
WE: Engineering (Energy and Utilities)
Re: In a leap year, what is the probability that the number of Sunday's is  [#permalink]

Show Tags

01 Apr 2020, 22:22
A leap year has 366 days.
A year has 52 weeks. Hence there will be 52 Sundays for sure.
52 weeks = 364 days
366 – 364 =2 days
In a leap year there will be 52 Sundays and 2 days will be left.
These 2 days can be:
1. Sunday, Monday
2. Monday, Tuesday
3. Tuesday, Wednesday
4. Wednesday, Thursday
5. Thursday, Friday
6. Friday, Saturday
7. Saturday, Sunday
Of these total 7 outcomes, the favourable outcomes are 2.
Hence the probability of getting 53 sundays = 2/7

Intern
Joined: 14 Jan 2020
Posts: 29
GMAT 1: 760 Q51 V41
In a leap year, what is the probability that the number of Sunday's is  [#permalink]

Show Tags

02 Apr 2020, 01:35
leap year has 366 days
we have 366 = 7*52 +2 : (52 weeks and 2 extra days)
2 extra days we can have {sat,su ; su,mo ; mo,tu ; tu,we ; we,th ; th,fr ; fr,sa}
2 out of these 7 ways has an extra sunday
so ,2/7 is the probability
_________________
PREP NOW!!
BOTH ARE INTEGRAL PARTS OF YOUR APPLICATION>
In a leap year, what is the probability that the number of Sunday's is   [#permalink] 02 Apr 2020, 01:35