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# A bag contains 7 red, 9 yellow, and 3 black balls. If a ball is pick

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Intern
Status: The journey is always more beautiful than the destination
Affiliations: Computer Science
Joined: 24 Apr 2017
Posts: 42
Location: India
Concentration: Statistics, Strategy
GMAT 1: 570 Q40 V28
GPA: 3.14
A bag contains 7 red, 9 yellow, and 3 black balls. If a ball is pick [#permalink]

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Updated on: 09 Apr 2018, 01:21
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15% (low)

Question Stats:

100% (00:31) correct 0% (00:00) wrong based on 17 sessions

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A bag contains 7 red, 9 yellow, and 3 black balls. If a ball is picked at random, what is the probability that the ball drawn will be either a red or a black ball?

a. 7/19
b. 9/19
c. 10/19
d. 11/19
e. 12/19

Source- time4education
[Reveal] Spoiler: OA

_________________

Sky is the limit. 800 is the limit.

Originally posted by Nixondutta on 08 Apr 2018, 23:56.
Last edited by Bunuel on 09 Apr 2018, 01:21, edited 1 time in total.
Edited the question.
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Joined: 05 Feb 2016
Posts: 107
Location: India
Concentration: General Management, Marketing
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Re: A bag contains 7 red, 9 yellow, and 3 black balls. If a ball is pick [#permalink]

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09 Apr 2018, 00:27
Nixondutta wrote:
A bag contains 7 red, 9 yellow, and 3 black balls. If a ball is picked at random, what is the probability that the ball drawn will be either a red or a black ball?
Source- time4education

a.7/19
b.9/19
c.10/19
d.11/19
e.12/19

probablity=$$\frac{(7C1+3C1)}{(19C1)}$$

option C
Re: A bag contains 7 red, 9 yellow, and 3 black balls. If a ball is pick   [#permalink] 09 Apr 2018, 00:27
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