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题库 / GMATAdvanced-PS-56
Five integers between 10 and 99, inclusive, are to be formed by using each of the ten digits exactly once in such a way that the sum of the five integers is as small as possible.What is the greatest possible integer that could be among these five numbers?
98
91
59
50
37
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Sum of integers in units place is: 9+8+7+6+0= 30
Sum of integers created with tens digit is: 50+40+30+20+10= 150
So, sum of five integers will always be 30+150 = 180 irrespective of wherever we place these single digit integers.
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