Bank competition

Q:

1. A conventional banking company runs a competition where a car can be won. Entry to the competition is free and open to customers and non-customers of the bank. The banking company itself will be the entity awarding the prize, not the car company, nor any other entity associated. Is entering such a competition permissible?

2. Similarly, a bank is offering branded pencils, pens, rulers, key rings, notebooks, etc. as gifts to customers and non-customers for marketing purposes. Will this be permissible to accept and use?

Commission based bonus

Q: Luqmaan owns a business. Over and above the fixed salary which he pays each worker every month, he also gives his workers a percentage-based commission for the sales they do. This commission is a bonus over and above their set salary which is given to them as an incentive for working harder. Is this permissible?