12
The next number is the sequence 236175969, 48, 12 is 236175861.
The number 7 comes next.
The series seems to be "add 3," so the next number in the series would be 12 followed by 15.
26
9
132
352, assuming the series is t(n) = 2.5n4 - 29n3 + 123.5n2 - 195n + 100
11
11
24
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.