18
108
29, assuming it is an algebraically reclusive sequence.
15
18-the correct number should be 20.
21
24
24, they are going up in 3's, 13, 16, 19 and 18, 21 so next number is 24.
13 18 16 21 19 24 22 27 25 ... . This series consists of adding 5 to the first number and subtracting 2 from the next number, repeating the sequence in that order.
3 The series is obtained by subtracting a number that reduces by 1 at each stage 18 - 5 = 13 13 - 4 = 9 9 - 3 = 6 6 - 2 = 4 4 - 1 = 3
The rule is: add 5, subtract 2, add 5, subtract 2, . . . Next number is 24.
18
24 for each number you add 5 and then subtract 2. 19 plus 5 is 24.
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.
Since the numbers are going down be 5,4,3,2, the next number would be 3. It would be 3 because it would then go down by one.
53