eay its the fibbonacci code the answer is 15
18
1834 (3+1)6 (4+2)9 (6+3)13 (9+4)18 (13+5)...and so on
31
3
10
The next number is 7 Am i right ❓ Solution 6-2=4 4+3= 7 7-2 = 5 5+3=8 8-2=6 6+3=9 So next is 9-2= 7 .
18. 3+1=4, 4+2=6, 6+3=9, 9+4=13, 13+5=18.
10
The series seems to be "add 3," so the next number in the series would be 12 followed by 15.
10,11,13,14,15,17
18 3 +1 4 +2 6 +3 9 +4 13 +5 18 +6 24 +7 31 +8 39 +9 48 +10 58...
38 20+3 = 23 23+6=29 29+9=38