 Hi and welcome to the session I am Deepika here. Let's discuss the question which says the number of arbitrary constants in the particular solution of a differential equation of third order of A3, V2, C1 and D0. Let us first understand what is the particular solution of a differential equation. Now we know that the solution which contains arbitrary constants is called the general solution of the differential equation. But when we give the particular values to the arbitrary constants, the solution obtained is called the particular solution of the differential equation. That is the solution obtained from the general solution by giving particular values to the arbitrary constants is called a particular solution of the differential equation. So let's start the solution. Now we know that the particular solution of a differential equation is free from arbitrary constants. Therefore the number of arbitrary constants in the particular solution of a differential equation of third order are 0 and this is our option D. So D is the correct answer. I hope the solution is clear to you. Why and take care.