Consider the following implication: "If you drink coffee then you won't be able to sleep." Which of the following is the contrapositive of this statement? If you can't sleep then you drank coffee. If you don't drink coffee then you will be able to sleep. If you can sleep then you didn't drink coffee. None of these are true. If you don't drink then you will be able to sleep. Question 20 Select the negation of: All detergents All detergents are not the same. No detergents are the same. Some detergents are the same. Some detergents are not the same. None of these are true