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Adam bought a box of 15 Apples out of which exactly 5 were Green and r

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Manager
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Joined: 26 Dec 2018
Posts: 129
Location: India
Adam bought a box of 15 Apples out of which exactly 5 were Green and r  [#permalink]

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New post 12 Jan 2019, 09:57
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A
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E

Difficulty:

  75% (hard)

Question Stats:

55% (03:06) correct 45% (03:30) wrong based on 20 sessions

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Adam bought a box of 15 Apples out of which exactly 5 were Green and rest were Red. He took out 4 Apples at random. What is the probability that atleast 2 out of 4 Apples selected were Green?

A. 3/91
B. 13/91
C. 30/91
D. 31/91
E. 37/91

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Posts: 215
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Adam bought a box of 15 Apples out of which exactly 5 were Green and r  [#permalink]

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New post 12 Jan 2019, 10:40
1
UB001 wrote:
Adam bought a box of 15 Apples out of which exactly 5 were Green and rest were Red. He took out 4 Apples at random. What is the probability that atleast 2 out of 4 Apples selected were Green?

A. 3/91
B. 13/91
C. 30/91
D. 31/91
E. 37/91


G=5, R= 10

probability that atleast 2 out of 4 Apples selected were Green = \(\frac{{Favorable outcomes}}{{Total_Outcomes}}\)

If you solve this \(\frac{{5c2*10c2 + 5c3*10c1 + 5c4}}{{15c4}}\)

You get answer as E.
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Joined: 23 Apr 2016
Posts: 31
Location: Singapore
Concentration: Strategy, Technology
WE: Other (Internet and New Media)
Re: Adam bought a box of 15 Apples out of which exactly 5 were Green and r  [#permalink]

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New post 13 Jan 2019, 03:31
IMO E

Cheers!
Shantanu Sharma
INSEAD Class of December 2017
MBA and Beyond Consulting
KanishkM wrote:
UB001 wrote:
Adam bought a box of 15 Apples out of which exactly 5 were Green and rest were Red. He took out 4 Apples at random. What is the probability that atleast 2 out of 4 Apples selected were Green?

A. 3/91
B. 13/91
C. 30/91
D. 31/91
E. 37/91


G=5, R= 10

probability that atleast 2 out of 4 Apples selected were Green = \(\frac{{Favorable outcomes}}{{Total_Outcomes}}\)

If you solve this \(\frac{{5c2*10c2 + 5c3*10c1 + 5c4}}{{15c4}}\)

You get answer as E.

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Re: Adam bought a box of 15 Apples out of which exactly 5 were Green and r &nbs [#permalink] 13 Jan 2019, 03:31
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Adam bought a box of 15 Apples out of which exactly 5 were Green and r

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