The next number in the sequence is 20. You are alternately multiplying the previous number by two and then subtracting two.
+6 -5 is the equation. 12 is the answer.
12,7,13,8 etc
42, each number in the sequence is the addition of the previous two: 2-2-4-6-10-16-26 2+2=4 4+6=10 6+10=16 10+16=26 16+26=42
The next number in this list would be 48. The reason this is the case is because the pattern is double to get the next number, then add 4 to get the next, then repeat. So 3 to 6 is a double, +4 gets you to 10. Double 10 to get 20, add 4 to get to 24. Double 24 to get 48, and then to continue you'd get 52, then 104, 108, 216 and so on
10
10
The next number is 34 Thus: 3 1 4 2 6 4 10 8 18 16 34 (Note: 3 + 1 = 4 : 4 + 2 = 6 : and so on)
21: (3)+3=(6)+4=(10)+5=(15)+6=(21)
The next number is 10. The pattern is -7, -6, -5, -4.
10
20
11 comes next.
The next number in the sequence is 20. You are alternately multiplying the previous number by two and then subtracting two.
+6 -5 is the equation. 12 is the answer.
Well, isn't that just a delightful little sequence you've got there! Let's take a closer look at it. If we look at the pattern, we can see that each number is getting multiplied by the next odd number. So, the next number in the sequence would be 28 multiplied by 6, which gives us 168. Happy little numbers, just dancing along in a lovely sequence!
34