Explain the following sales promotion activities

Explain the following sales promotion activities.
(i) Discount.
(ii) Product combination.
(iii) Financing.
(iv) Lucky draw.

Techniques of sales promotion :
(i) Newsletters print or e-mailed newsletters These are the important and most attractive wat to promote the business and build public relations.
(ii) Social media Using social networking sites such as facebook, Twitter, you can easily build up the relations with public.
(iii) Press release It is the most common medium to interact with general public.
(iv) Special events By sponsoring the social events, one can easily build up the relations with public and use such events in future for publicity and propaganda.