Well, for every 10 numbers there are 5 even numbers (2,4,6,8,10). So if you include beginning and ending numbers, the even numbers from from 100 to 150 are:
26
250
50
The numbers are -150 and -148.
100 + 50
There are 899 numbers between 100 and 1000. Every 6th number is divisible by 6. 899 divided by 6 is 149 and 5/6. The answer must be 149 or 150. The first number in that set is 102 (17 x 6). The last is 996 (166 x 6). 166 - 17 + 1 is 150. There are 150 numbers between 100 and 1000 that are divisible by 6.
The even numbers of 150 are: 2,6,10,30,and 50
100
150 (half, the other half are odd numbers)
250
The range of these three numbers is equal to 150 - 50 = 100
to get 150 you plus 100 and 50 togehter to get 150
100+25+25 = 150
The least common multiple of the numbers 450, 180, 100 and 150 is 900.
50
An infinite number of numbers would round to 150.
The numbers are -150 and -148.
The mean of these numbers is 100 + 150 + 252 + 261 + 270 = 1033/5 = 206.6