3, 6, 9... just continue adding 3 at a time.
There are 130 positive integers less than 1,000 that are divisible by seven but not divisible by 11
There are 544 positive integers less than 1,000 that are either divisible by two or by 11.
666 integers.
6
8 of them.
It is 83667.
Nine of them.
533
332
48
130 numbers
There are 90 integers less than 1,000 that are divisible by 11.