?

I am new to programming so I am just experimenting a little...

- Is there any way to fine tune what I have written below?

- If I was to add more countries and clues for example, is there a way to conveniently    code for this rather than having to do if statements and references for every single      one?

- Also, is there a way once a clue has been used, it will automatically use a different      clue and not repeat the same one again?

Code below...

I am a white student currently living in Australia and I am appalled by the amount of racism. I've had people ask me why I care about it if i'm not the one receiving it. To me, that just shows ignorance.

I've heard people with and without religion being racist to others and it seems to spread across most of the White population and probably most of the world. I may not be the one getting attacked by racism but I feel so bad for those that have to receive it and quite unhappy (to put it lightly) at those who evoke it. I thought racism was supposed to be decreasing but it seems to be doing the opposite. People seem to be getting more and more ignorant. Can someone tell me why racism is so popular?

This is probably easy to answer but i've forgotten how to do it. Can someone please assist showing all working so i can see how to do more of these questions. Thanks

|a| = 7

|b| = 3

a.b = 2

|a - b| = ?