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To apply for the position of photographer at a local magazine, Veronic

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Intern
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Joined: 04 Jun 2016
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Location: India
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To apply for the position of photographer at a local magazine, Veronic  [#permalink]

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New post 06 Jul 2016, 05:13
1
5
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

78% (01:10) correct 22% (01:13) wrong based on 185 sessions

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To apply for the position of photographer at a local magazine, Veronica needs to include three or four of her pictures in an envelope accompanying her application. If she has pre-selected five photos representative of her work, how many choices does she have to provide the photos for the magazine?

(A) 5
(B) 10
(C) 12
(D) 15
(E) 50
Spoiler: OA
Marshall & McDonough Moderator
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Re: To apply for the position of photographer at a local magazine, Veronic  [#permalink]

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New post 06 Jul 2016, 08:00
3
1
Veronica can choose 3 photos in 5C3 = 10 ways
She can choose 4 photos in 5C4 = 5 ways

Total number of ways = 10 + 5 = 15

Answer: D
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Re: To apply for the position of photographer at a local magazine, Veronic  [#permalink]

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New post 10 Jul 2016, 13:28
Select 3 photos from 5 OR select 4 photos from 5: 5C3 OR 5C4 = 5*4 + 5 = 15 (D)
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Re: To apply for the position of photographer at a local magazine, Veronic  [#permalink]

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New post 15 Nov 2017, 11:26
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Top Contributor
AnishG wrote:
To apply for the position of photographer at a local magazine, Veronica needs to include three or four of her pictures in an envelope accompanying her application. If she has pre-selected five photos representative of her work, how many choices does she have to provide the photos for the magazine?

(A) 5
(B) 10
(C) 12
(D) 15
(E) 50


Since the order in which we select the pictures does not matter, we can use combinations.

We must consider two possible cases:
1) Veronica includes 3 of her pictures
We can select 3 pictures from 5 pictures in 5C3 ways
5C3 = 10

2) Veronica includes 4 of her pictures
We can select 4 pictures from 5 pictures in 5C4 ways
5C4 = 5

ASIDE: Below, there's a video that shows you how to quickly calculate combinations (like 5C3) in your head

Total number of possibilities = 10 + 5
= 15
= D

Cheers,
Brent

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Re: To apply for the position of photographer at a local magazine, Veronic  [#permalink]

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New post 17 Oct 2019, 19:39
AnishG wrote:
To apply for the position of photographer at a local magazine, Veronica needs to include three or four of her pictures in an envelope accompanying her application. If she has pre-selected five photos representative of her work, how many choices does she have to provide the photos for the magazine?

(A) 5
(B) 10
(C) 12
(D) 15
(E) 50


The number of ways to select the photographs is:

5C3 + 5C4

(5 x 4 x 3)/(3 x 2) + 5

10 + 5 = 15

Answer: D
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Re: To apply for the position of photographer at a local magazine, Veronic   [#permalink] 17 Oct 2019, 19:39
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