Answers

2014-06-01T11:13:09+05:30
For each digit in each spot, if we fix that digit , there are 3! way to arrange the four numbers with that digit fix .so in sum we get 2*3! + 3*3! + 3*4! + 3*5! = 84
so for each position tens, hundred, thousands sum of units digits will be equal hence sum = 84*1000 + 84*100 + 84*10 + 84 = 93324
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