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Algebra
How many different sums can be formed with the coins,5 rupee,1 rupee,50 paisa,25 paisa,10 paisa and 1 paisa?
Read Solution (Total 6)
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- total no. of combination = 6C1+6C2+6C3+6C4+6C5+6C6
=> 2^6-1 (As nC0+nC1+......+nCn = 2^n i.e including zero) - 11 years agoHelpfull: Yes(21) No(1)
- there r 6 coins
every coin have 2 possibility(either selected or rejected)
so 2^6
now in 2^6 there is also a possiblity comes...if no coins is selected
so total possible solution=2^6-1=63 - 11 years agoHelpfull: Yes(12) No(1)
- there are 6 coins so 2^6-1
- 11 years agoHelpfull: Yes(3) No(0)
- we have to select atleast a coin hence
2^n-1 i.e
(2^6)-1=63 - 11 years agoHelpfull: Yes(2) No(0)
- total no. of combination=5^6-1=63
- 11 years agoHelpfull: Yes(0) No(4)
- It does not mention here that only sum of any two coins should be considered
- 10 years agoHelpfull: Yes(0) No(0)
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