Let A be Q \ {1}. Define * on A by x*y=x+y-xy. Is * binary on A ? If so, examine the commutative and associative properties satisfied by * on A.

Let A be Q \ {1}. Define * on A by xy=x+y-xy. Is binary on A ? If so, examine the commutative and associative properties satisfied by * on A.

Mixed-up sentence exercise

Put the parts in order to form a sentence. When you think your answer is correct, click on "Check" to check your answer. If you get stuck, click on "Hint" to find out the next correct part.