In the set of all integers from 6 to 41, inclusive, how many are multiples of 3 but not 4?

10

Step-by-step explanation:

There are twelve multiples of three between intergers 6 to 41 inclusive.

Those multiples are:

6 9 12 15 18 21 27 30 33 36 39 42

12 and 36 are multiples of four. So The multiples of three and not multiples of four are 10.