240
75 to 84
240 and 1
Infinitely many. There are infinitely many numbers between any two numbers. So, for example, cosidering only the numbers that round up, there are an infinitely many numbers between 149.999 and 150, all of which would round to 150. And there are another infinity between 149.5 and 149.999 which, to the nearest unit would round to 150. If you are rounding to the nearest 10, all the numbers between 145 and 150 would also round to 150. In all cases you must also consider the numbers that are rounded down to 150.
120 plus 120 equals 240, or 240 plus 0 equals 240, and keep on adding!
24
Anything from 235 to 244
Whole numbers include 235, 236, 237, 238 and 239
235 to 244
It is 240. It is 240. It is 240. It is 240.
235, 236, 237, 238, 239, 241, 242, 243, 244
The answer depends on what you are rounding to: For example, to the nearest dozen, it is any number in the range (234, 246).
240
240=2x2x2x2x3x5
240
75,76,77,78,79,81,82,83,84,
All even numbers are multiples of 2.