There could be two alternating series blended into one.
2....3....6......where the terms are formed by the addition of increasing odd numbers
...6....8....12.where the terms are formed by the addition of increasing even numbers
Then the next number would be 6 + 5 = 11.
11.
9
12 / 5 = 2 with a remainder of 2. So 12/5 as a mixed number is 2 2/5
Let the number be x and so the expression is: 12+x/2
number factors for :12=2*2*318=2*3*326=2*13
11
11.
The number which best completes the sequence below is: 2 9 5 13 10 19 17 ?
9
11
12 is a composite number that is a multiple of 2. 12 is not a prime number.
12 / 5 = 2 with a remainder of 2. So 12/5 as a mixed number is 2 2/5
What number best completes the sequence 1 1/2 5 10 1/2 18
12/2 = 6, a whole number.
The best shotgun shell for shooting ducks is a 3 to 3 1/2 inch 12 gauge with number 2 shot.
13 20 12
The number is 12. 12 ÷ 2 = 6 6 - 4 = 2