They are: 6 12 18 24 30 36 42 and 48
6 of them.
The slot from -150 to 350 is 500 wide. 500/6 = 831/3 -150 is a multiple of 6, and there are 83 more on the way to 350.
There are four multiples of 12 between 150 and 200: 156, 168, 180, 192
150, 300, 450, 600, 750, 900.
110, 120, 130, 140. (BETWEEN does not include the 100 and 150.)
There are 50 multiples of three that fall between and one and 150.
12 of them.
11 of them.
That's the same as asking how many multiples of 12 are between 1 and 150 and since 12 x 12 = 144, your answer is 12.
81 and 135
The common multiples of 5 and 6 are the multiples of their lowest common multiple (which is 30), so there are infinitely many common multiples of 5 and 6. The first five are: 30, 60, 90, 120, 150.
150