Hi Tanya,
It looks like they're adding 5 to the first number and repeating 6 for the second number. .
So the next numeral would be 19
and then 6, 24, 6, 29, 6, 34, 6 . . . . .
Dan
Tanya B.
asked 11/05/15
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Steve S.
or for more analytical types f(n) = f(n-1) + [f(n-2) - f(n-1)] + [f(n-2) - f(n-3)] + [f(n-3) - f(n-4)] In english, if you look at the difference of the numbers: 2, 3, -3, 8, -8... The next difference is the opposite of the n-1 difference plus the n-2 difference plus the n-3 difference. Interestingly, this function simplifies to: f(n) = 2[f(n-2)] - f(n-4)12/17/19