1962 AHSME Problems/Problem 36
Problem
If both and
are both integers, how many pairs of solutions are there of the equation
?
Solution
It is obvious that x>10 , thus x=12 , y=3.
Then, let ,
, it can be written as
,
Also,
, so, n only can be 2 , y=3, and the answer is
.
THE ABOVE IS WRONG