What are examples of express contract?

Express contract: Express contract is one which is made by words spoken or written. Example No. 1: X says to Y, will you buy a car for Rs. 100000? Y says to X, I am ready to buy you car for Rs. 100000. It is an express contract made rally. Example No. 2: X writes a letter to Y, I offer to sell my car for Rs. 100000 to you. Y send a letter to Y, I am ready to buy you car for Rs. 100000. It is an express contract made in writing.