The next number in the sequence is 18. It's +1, +2, +3, +4, ....
Dart Board
10,20,30,20
The next number in this sequence is 18. You're adding 1 to the difference of the previous two numbers. 4-3=1, 6-4=2 etc... so 18-13=5. The sequence is t(n) = 0.5*(n2 - n + 6) where n = 1, 2, 3, ... It is, of course, easy to find polynomials of order 3 or higher that would fit the sequence.
18 3 +1 4 +2 6 +3 9 +4 13 +5 18 +6 24 +7 31 +8 39 +9 48 +10 58...
18
The next number in the sequence is 18. It's +1, +2, +3, +4, ....
18
18
6 and 10
The nest number in the sequence is 18. Note that the difference between each number and the next number in the sequence follows the simple sequence of 1,2,3,4. Obviously the next in the sequence of increases is 5, so 13+5=18.
18. 3+1=4, 4+2=6, 6+3=9, 9+4=13, 13+5=18.
Dart Board
10,20,30,20
183 + 1 = 44 + 2 = 66 + 3 = 99 + 4 = 13Etc. The next number in the sequence would be 18, then 25, and so on.Ans 2.The previous answer contains an error.The next number in the sequence would be 18 (13 + 5),after which comes 24 (18 + 6 ) not 25.
It's, 7n+6
19. Add 3, then add 4, then add 5, then add 6,etc.