find the number.
by hemangsarkar, Sep 10, 2012, 6:25 PM
in this question, the representation of the number is not to be confused with the product.
Q) a
digit number 
when multiplied by gives 
.
find the number.
my solution :
let
be 
and 
be 
.
then we have
or,
or,
and are three digit numbers.
note that
is a prime number, which is easy to show. i will skip that part.
so we must have
and 
.
the number is
Q) a
digit number 
when multiplied by gives 
.find the number.
my solution :
let
be 
and 
be 
.then we have
or,
or,
and are three digit numbers.note that
is a prime number, which is easy to show. i will skip that part.so we must have
and 
.the number is
This post has been edited 1 time. Last edited by hemangsarkar, Sep 11, 2012, 7:32 AM
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