It could be any number you like since it is always possible to find a polynomial of order 5 that will fit the given 5 numbers and any sixth number.
Fitting the following polynomial, of order 4, shows that the next term should be 110.
Un = (5n4 - 50n3 + 195n2 - 358 + 328)/8 for n = 1, 2, 3, ...
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∙ 10y agoIn this series, the 1st, 3rd, and 5th numbers double as they progress, while the 2nd. 4th, and 6th number decrease by 4. That being the case, the next 2 numbers in the series would be 24, 4.
Look at the difference between each number and the next number.
Since each number is one less than the one before it, the next number would be 8.
108
24
What would be the next number in this series 15 12 13 10 11 8?
The series seems to be "add 3," so the next number in the series would be 12 followed by 15.
The next number in the series 4, 12, 6, 12, 36, 18, 36
The next number in the series 4-12-6-12-36-18-36.. is 108.
The next number is the sequence 236175969, 48, 12 is 236175861.
In this series, the 1st, 3rd, and 5th numbers double as they progress, while the 2nd. 4th, and 6th number decrease by 4. That being the case, the next 2 numbers in the series would be 24, 4.
Look at the difference between each number and the next number.
18
21 - each number in the series increases by the series 1,2,3,4,5.... Whereby 6 and 7 are separated by 1, 7 and 9 are separated by 2, 9 and 12 are separated by 3, 12 and 16 are separated by 4, so the next in the series would be 21 (16 and 21 are separated by 5).
Since each number is one less than the one before it, the next number would be 8.
108
108