30
10.
How many odd numbers are there from 16 to 30? Seven {7} odd numbers
The answer to your question is 7
31, 33, 35, 37, 39, 41, 43 & 45 = eight odd numbers !
10
33,35,39,45,49
You cannot. The sum of 5 odd numbers must be odd. 30 is not odd.You cannot. The sum of 5 odd numbers must be odd. 30 is not odd.You cannot. The sum of 5 odd numbers must be odd. 30 is not odd.You cannot. The sum of 5 odd numbers must be odd. 30 is not odd.
The sum of all the odd numbers between 1 and 30 (2-28) is 784. If you include 30 the result is 900.
The odd numbers between 30 and 40 are: 31 33 35 37 39
10.
There are 30 whole numbers that are odd numbers less than 60 which are also positive. Otherwise, there are infinitely many of them.