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Maths Puzzle
1!+2!+3!+........+50! is divided by 5! then the remailnder is------------------? a)3 b)33 c)13 d)93...
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- Clearly 5! onwards each is divisible by 5!.
SO the remainder will come from the division (1!+2!+3!+4!) divided by 5!
Now (1!+2!+3!+4!) = 1+2+6+24 = 33 and 5! = 120 so the remainder is 33. - 12 years agoHelpfull: Yes(35) No(3)
- 5! onwards all are having 0,s in their units place,
so all r divisible by 5 and gives remainder 0.
remaing (1!+2!+3!+4!)/5=33/5=3
ans is option (a) - 12 years agoHelpfull: Yes(4) No(12)
- (1!+2!+3!+4!)/5!+5!/5!+6!/5!+....
here 6!=6*5! so something*5!/5! remainder is 0
so ans is=1!+2!+3!+4!=33 - 12 years agoHelpfull: Yes(4) No(0)
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