numbers are formed by using 1,2,3,4,5(repetetion not allowed)sum of all nos. formed by
these nos.

• ans is 3999960..
  there are 24 no. starting with 1...similarly starting with 2,3,4,5... 24 numbers each
  in all 120 nos.
  for 10 thousand place..1 occurs 24 times, 2 occurs 24 times..similarly 3, 4,5 occurs 24 times each...so for 10 thousand place ..sum is 24*10000*(1+2+3+4+5)
  similarly for thousand place 24*1000*(1+2+3+4+5)
  for hundred place 24*100*15
  for tens place 24*10*15
  for unit place 25*1*15
  adding all as..(240000+24000+2400+240+24)*15=3999960
• 12 years agoHelpfull: Yes(46) No(2)
• I think this formula useful for this type problems..
  (sum of digits)*(n-1)!(11111......n times)
  here n means no. of numbers in the problem
  for example in given problem n=5;
• 12 years agoHelpfull: Yes(35) No(0)
• @atul: dear reverse se krne se bhi yae ans ayega ...ans is coreect...
• 12 years agoHelpfull: Yes(3) No(0)
• sorry buddy ans is 6666600..
  Reverse your approach and start from unit place..
• 12 years agoHelpfull: Yes(1) No(18)
• (sum of digits)*(n-1)!(11111......n times)
  15*4!*11111
  3999960
• 12 years agoHelpfull: Yes(1) No(0)