The number 7 comes next.
18
26
11
45 54
The number 7 comes next.
18
26
11
45 54
54
The pattern is add three and then multiply by three. The next number is 174.
3 * 2 = 6 * 3= 18 *4 =72 *5 = 360
Each number in the series is being multiplied by (2 + (n-1)) where n = the term in the series 3 x 2 = 6 6 x 3 = 18 18 * 4 = 72 72 x 5 = 360
18
The next number is 0
21