Answer:
{16, 17, 18, 19} are the numbers.
Explanation:
If n stands for a whole number and 2n is greater than 30.
Means 2n > 30
⇒ n > 15
Now another statement says 5n is less than 100
Means 5n < 100
⇒ n < 20
So n defines the values
20 > n > 15
If n is a whole number then numbers between 15 and 20 will be
{16, 17, 18, 19}. This set will not include 15 and 20 since n is not equal to these numbers.