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There are some balls in a bag out of which seven balls are black and t

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1 KUDOS received
Manager
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S
Joined: 20 Jun 2013
Posts: 50

Kudos [?]: 9 [1], given: 20

Location: India
Concentration: Economics, Finance
GMAT 1: 430 Q39 V25
GPA: 3.5
WE: Information Technology (Other)
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There are some balls in a bag out of which seven balls are black and t [#permalink]

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New post 09 Sep 2017, 08:52
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Question Stats:

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There are some balls in a bag out of which seven balls are black and three balls are white. The bag
contains six plastic balls and seven leather balls. Three of the plastic balls are black in color and
two are white in color. One of the leather balls is white in color and two are black in color. There is
a green ball, which is of neither leather nor of plastic. What can be the least possible number of balls
in the bag?
A. 17
B. 16
C. 15
D. 14
E. none
[Reveal] Spoiler: OA

Kudos [?]: 9 [1], given: 20

Manager
Manager
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Joined: 02 Nov 2015
Posts: 176

Kudos [?]: 26 [0], given: 121

GMAT 1: 640 Q49 V29
Premium Member CAT Tests
Re: There are some balls in a bag out of which seven balls are black and t [#permalink]

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New post 09 Sep 2017, 10:21
Out of 6 plastic balls , three are black , two are white and one is of unknown colour. Out of seven leather balls , one is white , two are black and four are of unknown colour.
And there is also a green ball. So when we add all these colours , we see that all the white colour Balls have been engaged/adjusted and also the five black ones .
So there are still two back balls whose type of material is unknown. Also colour of one plastic ball and four leather balls is unknown.
So totally we have six plastic balls , seven leather balls , one green ball and the two black balls whose material make is unknown. So it totals 16.

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Kudos [?]: 26 [0], given: 121

Re: There are some balls in a bag out of which seven balls are black and t   [#permalink] 09 Sep 2017, 10:21
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There are some balls in a bag out of which seven balls are black and t

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