Unless you specify the length of the sequence, it is infinite, and so no number completes it.
Given no further information, I would say the next number is 18. However, check out the link to the OEIS which gives a number of alternatives.
The number which best completes the sequence below is:1 1 3 2 4 6 5 25 ?
25
13, 14, 16 - the numbers increase by 1 then 2 each time
The next number would be 18.3, 4, 6, 9, 13To get from 3 to 4, you need to add one. To get from 4 to 6, you need to add two. To get from 6 to 9, you need to add three. And so on and so on.
2 4 3 9 4 16 5 25 6 36 7 49 8 64
18
18
18
18 (3+1 4+2 6+3 9+4 13+5)
13 20 12
It is 24+7 = 31
Continuing the sequence would be the the numbers 24, 31, 39.
The difference between consecutive numbers is 1, 2, 3, 4. So the next difference will be... Added to 13 gives...
18 Add to previous number by 1 then 2 then 3 then 4 and 5 3+1=4 4+2=6 6+3=9 9+4=13 so then 13+5=18
Nothing "completes" the sequence because it goes on forever - without end.
The number which best completes the sequence below is:1 1 3 2 4 6 5 25 ?
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.