Can you solve this riddle?

You’d think the number six would go in the empty space in this little diagram. But it doesn’t! Do you know what should go there instead? We reveal the right answer just below!

To solve this riddle you don’t have to be a mathematical marvel. What does help with solving this is a little bit of car knowledge, though. That’s because the empty space should befilled with ‘R’ for ‘reverse’! We admit, it’s kind of lame 😉 Did you get it right away?

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