The quotient, when difference of the number 53 and the number obtained on reversing its digits is divided by 2 :

1. 8

2. 9

3. 3

4. 18

According to the property, when ab - ba is divided by a - b, the quotient = 9.

So, when 53 - 35 is divided by 2 (5 - 3 = 2), the quotient = 9

Hence, option 2 is the correct option.