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An old man has Rs. (1! + 2! + 3! + ... + 50!), all of which he wants to divide equally (without fractions) among his n children. Then, n may be
Read Solution (Total 6)
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- ans is 3
there are three children for a old man
1!+2!=3 so these Rs.3 can be divided 1 for each one
on from 3!,4!,5!......50! every number is divided by 3
for example 3!=6 ,Rs.2 for each
for example 4!=24,Rs.8 for each
and so on...
so there three children for old man - 10 years agoHelpfull: Yes(29) No(6)
- From 6! on wards 9 can divide dirctly.
Becuse after 5! every number contains atleast two 3.
Therefore
The rem of 1! +2!+3!+4!+5! div by 9 = 0. - 10 years agoHelpfull: Yes(7) No(3)
- in openSeesame options were -
11,9,5,7 - 10 years agoHelpfull: Yes(1) No(0)
- 9;
(1!+2!+3!+4!+5!+6!) is divisible by 9 - 10 years agoHelpfull: Yes(0) No(3)
- 1+2+3+3!(1+4+5*4+......)/3=0
so n=3 - 10 years agoHelpfull: Yes(0) No(0)
- upto 5! sum is 120..divide it by 6...there after everyhing is divisible by 6 soo it can be shared without fractions among all the 6 sons equally..ans msy be 6 also
- 10 years agoHelpfull: Yes(0) No(0)
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