The next number in the series 3, 4, 6, 7, 9, 10 is:

A sequence is a list of numbers (or items) that exhibits a particular pattern.

Answer: The next number in the series 3, 4, 6, 7, 9, 10 is 12.

Let's look into the pattern.

Explanation:

If we try to observe carefully, then we can see that the sequence can be rearranged as,

3, 3+1=4, 4+2=6, 6+1=7, 7+2=9, 9+1=10,  ...

We are first adding 1 and then 2 to the previous digit. Then, again adding 1 and 2, and it goes on like this.

Hence, the next number should be 10+2 = 12.

Thus, the next number in the series 3, 4, 6, 7, 9, 10 is 12.