14
13
13
1834 (3+1)6 (4+2)9 (6+3)13 (9+4)18 (13+5)...and so on
18. 3+1=4, 4+2=6, 6+3=9, 9+4=13, 13+5=18.
Since each number is increased by 4, it would be: 1 + 4 = 5 + 4 = 9 + 4 = 13, and so on. Or, 1 + x = 5, 5 + x = 9, 9 + x = 13 . . .
13 or 100, what are you looking for? 100 Liz is right
5
2, the pattern is -5 then plus 2 repeated, therefore 7 - 5 = 2
5.
21
5
41