(1)Sherry walks into a bookshop and finds a magazine mistakenly placed in the discount basket for RM5.Sherry takes the magazine and goes to the counter to pay for the magazine.The bookseller,Morgan tells Sherry that the magazine has been put in the discount basket by mistake and its real price is RM15.Can Sherry insist on the magazine at RM5?Discuss.

(2) Bob and Chia entered an agreement for Chia to murder Hugo.In return Bob was going to pay Chia the sum of RM100,000.Is the contract valid,voidable or void?

(3)John agreed to sell to Jolyn illegal copies of several popular CD's of famous musicians for the sum of RM2000.Is the contract valid,voidable or void?

(4)Hank,an American agreed to buy an expensive antique from Ahmad,at the time the agreement was made,neither Hank nor Ahmad were aware that the antique,along with other articles,had already been destroyed in a fire at Ahmad's house.Discuss the position of the parties.