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GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2506
Given Kudos: 1055
GPA: 3.39
Each of the digits 7, 5, 8, 9 and 4 is used only one to form a three d
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30 Mar 2022, 04:52
30 Mar 2022, 04:52
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Question Stats:
66% (01:52) correct
33% (02:47) wrong based on 3 sessions
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Each of the digits 7, 5, 8, 9 and 4 is used only one 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. 1
B. 2
C. 3
D. 4
E. 5
A. 1
B. 2
C. 3
D. 4
E. 5
GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2506
Given Kudos: 1055
GPA: 3.39
Re: Each of the digits 7, 5, 8, 9 and 4 is used only one to form a three d
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07 Apr 2022, 03:11
07 Apr 2022, 03:11
Expert Reply
Explanation
Asked: 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?
7 + 8 = 15
9 + 5 = 14
4
4 (9+5)(8+7) = 555
There are 2 * 2 = 4 choices
Numbers = {(498,57),(497,58),(458,97),(457,98)}
IMO D
Asked: 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?
7 + 8 = 15
9 + 5 = 14
4
4 (9+5)(8+7) = 555
There are 2 * 2 = 4 choices
Numbers = {(498,57),(497,58),(458,97),(457,98)}
IMO D
gmatclubot
Re: Each of the digits 7, 5, 8, 9 and 4 is used only one to form a three d [#permalink]
07 Apr 2022, 03:11
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