Logic, math & statistics puzzle...that holds some wonderful lessons!

[adrianh]

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.

Anybody....first guess

[IanF]

10

[Houses4Rent]

10 works, but 8 can also work depending on which rule/pattern is applied.

[wynn]

2 4 7 if you are counting up
2 4 5 if you are counting down
10 if you are using Fibonacci
8 if you are counting up in twos

'8 who do we appreciate' if you are singing team songs.

[adrianh]

Like I said, I will only answer one guess and then the next.

1. IanF - 10 - Fits rule.

19 tests left to determine the rule after the 20th test.

[Mike C]

Like I said, I will only answer one guess and then the next.

1. IanF - 10 - Fits rule.

19 tests left to determine the rule after the 20th test.

next number after 10 is 16

[adrianh]

1. IanF - 10 - Fits rule.
2. MikeC - 16 - Fits rule.

18 tests left!

[sterne.law@gmail.com]

The rule is that the last number is added to the number prior thereto (second last number) to give you the next number in the sequence

[adrianh]

I cannot comment on Anthony's post because the rules of the game states that you will be given 20 guesses (tests) and then only be asked to define the rule.

(You are of course free to discuss possible rules amongst yourselves)

[sterne.law@gmail.com]

That's not fair. APPEAL APPEAL

[IanF]

26
For the strict rule master!

[wynn]

12 if you add them all together
-8 if you subtract them from one another (2-4-6=-8)

[adrianh]

1. IanF - 10 - Fits rule.
2. MikeC - 16 - Fits rule.
3. IanF - 26 - Fits rule.

17 tests left!

@wynn - Do you want to submit a test? If so - give me one number!

[Marq]

13

[adrianh]

1. IanF - 10 - Fits rule.
2. MikeC - 16 - Fits rule.
3. IanF - 26 - Fits rule.
4. Marg- 13 - Fits rule.

16 tests left!