The sum of 2 integers x and y is 10. Total number of all the possible doublets (x, y) are
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x add y :: 10
2x , :: 10
,x :: 10
5
x:: 2
put x::2 in equation 1
2add y :: 10
y::2
(x,y) ( 2 , -2 )
2x , :: 10
,x :: 10
5
x:: 2
put x::2 in equation 1
2add y :: 10
y::2
(x,y) ( 2 , -2 )
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