Any number of your choice. It is possible to find a quartic (order 4) polynomial that will fit the given 4 points and any other.
There is only one cubic that will do the trick:
Un = (-3n3 + 26n2 - 63n + 52)/2 for n = 1, 2, 3, ...
and according to it U5 = 6.
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32 The rule is to add 3n, where n is the number of the number in the series. (add 3, 6, 9, 12).
It is: 17+6 = 23
How about 3 followed by 12
The series appears to alternate between two patterns: one sequence (3, 6, 9) increases by 3, while the other (4, 7, 10) increases by 3 as well. The next number after 10, following the second sequence, would be 13. Therefore, the next number in the series is 13.
The series seems to be "add 3," so the next number in the series would be 12 followed by 15.
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What would be the next number in this series 15 12 13 10 11 8?
The number that comes next in the series 1 2 2 5 3 10 is 7. You get this number by subtracting the number 3 from the number 10.
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4/3 or 1.3333333 repeating forever. Each number is the previous number divided by 3.
32 The rule is to add 3n, where n is the number of the number in the series. (add 3, 6, 9, 12).
It is: 17+6 = 23
How about 3 followed by 12