Inclusively (counting 1 and 50) there are 50. Exclusively there are 48.
There are exactly 50 even numbers if you include 100. There are exactly 50 odd numbers if you include 1.
Even numbers account for 50% of the numbers from 1 to 50.
25.
15 of them.
25
Including 50, there are 34.
51
There are infinitely many sets of numbers. One such is 1*1*0.7*50
2, 4, 6, ..., 50; 25 numbers.
1, 2, 5, 10, 25 and 50.
50