12 because they are decreasing by increments of 6
it is 31818 - 8 = 1010 - 4 = 66 - 2 = 44 - 1 = 3
30!
The series 1318162119 appears to be a sequence where each number is formed by concatenating the first few even numbers. The pattern is: 2 (2), 4 (4), 6 (6), 8 (8), 10 (10), 12 (12), 14 (14), and 16 (16). Following this pattern, the next even number is 18, which would be represented as "18" in the series. Thus, the next number in the series is 20, resulting in the next sequence being 131816211920.
6
108
18
21
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.
21-3=18 18/2=9 9*3=27 that is the pattern so after the 36 it should be 33
18
53
24
18
26
Hi
The number 7 comes next.