I have some numbers 2 4 6 and I would like for you to work out what is the rule for the next numbers.
Now, you can take 20 shots a guessing a number and I will tell you whether your guess fits the rule or not. Once 20 guesses have been used up, you have to tell me what the rule is.
Ok, have a go. Remember that there are only 20 chances to work out what the rule is so don't waste them. Don't take multiple guesses because I will only answer one guess at a time. Don't take a guess before you've read my reply to a guess.