how many different sums can be formed by selecting either 5 rupee,1 rupee,50 paisa,10 paisa,3 paisa,2 paisa and 1paisa,,

• thank all for ur kind response....bt the problem is here 2 paisa n 1 paisa sum is again 3paisa which is being repeated here...so what amount i should deduct....
• 9 years agoHelpfull: Yes(3) No(0)
• using formula of p&c
  2^m-1 where m is no.of items
  2^7-1=127
• 9 years agoHelpfull: Yes(2) No(1)
• Forming different sums from given denominations is given by no of ways to select one from given 7 different denominations. which is given by 2^n -1
  =2^7 -1
  =128 -1
  =127 sums
• 9 years agoHelpfull: Yes(1) No(1)
• 7C7+7C6+7C5+7C4+7C3+7C2+7C1==1+7+21+35+35+21+7==127
  tell me what options were given in this question ??
• 9 years agoHelpfull: Yes(0) No(1)
• 1
  2 1,2
  3 1,3 2,3
  10 1,10 2,10 3,10
  50 1,50 2,50 3,50 10,50
  1 1,1 2,1 3,1 10,1 50,1
  5 1,5 2,5 3,5 10,5 50,5 1,5
  28
• 9 years agoHelpfull: Yes(0) No(1)