Last visit was: 03 Aug 2024, 18:21 It is currently 03 Aug 2024, 18:21
Toolkit
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
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

# A box contains only white balls and black balls. What is the probabili

SORT BY:
Tags:
Show Tags
Hide Tags
Manager
Joined: 03 Jun 2019
Posts: 219
Own Kudos [?]: 10698 [9]
Given Kudos: 49
Intern
Joined: 11 Apr 2018
Posts: 14
Own Kudos [?]: 24 [1]
Given Kudos: 34
Location: India
WE:Engineering (Energy and Utilities)
Intern
Joined: 06 May 2020
Posts: 32
Own Kudos [?]: 89 [1]
Given Kudos: 11
Location: India
Schools: HEC '22
Manager
Joined: 01 Jun 2019
Posts: 64
Own Kudos [?]: 71 [1]
Given Kudos: 15
Re: A box contains only white balls and black balls. What is the probabili [#permalink]
1
Bookmarks
parkhydel wrote:
A box contains only white balls and black balls. What is the probability that a ball selected at random from the box is white?

(1) There are 100 balls in the box.
(2) There are 40 black balls in the box.

DS35330.02

Statement 1 is insufficient as nothing about white balls.
Statement 2 is insufficient as no mention about white balls

On combining both, we get white balls are 60.

Hence, OA is C.
Non-Human User
Joined: 09 Sep 2013
Posts: 34228
Own Kudos [?]: 858 [0]
Given Kudos: 0
Re: A box contains only white balls and black balls. What is the probabili [#permalink]
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
Re: A box contains only white balls and black balls. What is the probabili [#permalink]
Moderator:
Math Expert
94778 posts