Question

three numbers if added the sum is equal to their product

Answer 1

1+2+3=6
1x2x3=6
we can get other numbers also

Answer 2

let the nos be x , x+1 , x+2 
x+x+1+x+2=(x) (x+1) (x+2)
3x +3= (x) (x+1) (x+2)
3(x+1)=(x) (x+1) (x+2)
3=x² +2
x² =1
⇒x=1
∴ the nos are 1,2,3.