let the first digit be X. Possible numbers of X are 1 , 2 , 3 and 4
So the last digit wil be 2X.
The second and third digits are the same. Let that be y.
The car plate number is of the form X Y Y 2X
Now, 2 ( first two digits) = Last two digits.
Substituting the values,
2 ( 10X + Y) = 10Y + 2X
20x + 2y = 10 y + 2x ==> 18x = 8y ==> y = 9/4 (x)
So the only possible number of x = 4 , which gives value of y as 9.
The number plate value will be 4 9 9 8
KL45-4998 is the car plate number