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# Permutations and combinations

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Intern
Joined: 03 Oct 2016
Posts: 2

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03 Nov 2018, 07:14
1
00:00

Difficulty:

55% (hard)

Question Stats:

40% (02:14) correct 60% (02:41) wrong based on 5 sessions

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Permutations.

Each of the digits 7, 5, 8, 9, and 4 is used only once to form a three-digit integer and a two-digit integer. If the sum of the integers is 555, how many such pairs of integers can be formed?

A: One
B: Two
C: Three
D: Four
E: Five
Math Expert
Joined: 02 Sep 2009
Posts: 59632

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03 Nov 2018, 07:16
sanogee wrote:
Permutations.

Each of the digits 7, 5, 8, 9, and 4 is used only once to form a three-digit integer and a two-digit integer. If the sum of the integers is 555, how many such pairs of integers can be formed?

A: One
B: Two
C: Three
D: Four
E: Five

Discussed here: https://gmatclub.com/forum/each-of-the- ... 60732.html

_________________
Re: Permutations and combinations   [#permalink] 03 Nov 2018, 07:16
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