the answer is 3
3. It is the number of letters in the names of positive integers in English.
6
5
3 4 5 6 The next number is 1 plus the previous number So the pattern rule is the next number is n + 1
The next number is 4. 1, 3, 2, 5, 7, 4, 9, 11, 6
The sequence is: +2, -1, -1, and every other number is written twice. The next few numbers are 3, 5, 4, 4, 3, 5, 5, 4, 3, 3… The sequence 3, 3, 5, 4, 4, 3, 5, 5, 4 keeps repeating.
6
26
The next number is 4. There is a sequence:Add 3, subtract 2, repeat
5
You add two then take one. 1+2=3, 3-1=2, 2+2=4, 4-1=3. The next number is 5.